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231023202211020 = 2235171600714149643
BaseRepresentation
bin110100100001110101000111…
…111001110001010011001100
31010021222121021011210200111110
4310201311013321301103030
5220240041004231223040
62135202332143052020
766442606213216122
oct6441650771612314
91107877234720443
10231023202211020
116767a4319818aa
1221ab1a16ba1010
139bba5189055bb
144109822b01912
151ba969c533980
hexd21d47e714cc

231023202211020 has 96 divisors (see below), whose sum is σ = 684958683483648. Its totient is φ = 57978667482112.

The previous prime is 231023202211001. The next prime is 231023202211027. The reversal of 231023202211020 is 20112202320132.

231023202211020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231023202211027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9252319 + ... + 23401961.

It is an arithmetic number, because the mean of its divisors is an integer number (7134986286288).

Almost surely, 2231023202211020 is an apocalyptic number.

231023202211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231023202211020 is an abundant number, since it is smaller than the sum of its proper divisors (453935481272628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231023202211020 is a wasteful number, since it uses less digits than its factorization.

231023202211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14165679 (or 14165677 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 231023202211020 its reverse (20112202320132), we get a palindrome (251135404531152).

The spelling of 231023202211020 in words is "two hundred thirty-one trillion, twenty-three billion, two hundred two million, two hundred eleven thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 85 102 170 204 255 340 510 1020 16007 32014 48021 64028 80035 96042 160070 192084 240105 272119 320140 480210 544238 816357 960420 1088476 1360595 1632714 2721190 3265428 4081785 5442380 8163570 14149643 16327140 28299286 42448929 56598572 70748215 84897858 141496430 169795716 212244645 240543931 282992860 424489290 481087862 721631793 848978580 962175724 1202719655 1443263586 2405439310 2886527172 3608158965 4810878620 7216317930 14432635860 226493335501 452986671002 679480006503 905973342004 1132466677505 1358960013006 2264933355010 2717920026012 3397400032515 3850386703517 4529866710020 6794800065030 7700773407034 11551160110551 13589600130060 15401546814068 19251933517585 23102320221102 38503867035170 46204640442204 57755800552755 77007734070340 115511601105510 231023202211020