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231312223030100 = 225219317384048187
BaseRepresentation
bin110100100110000010010010…
…111000101100101101010100
31010100000020021112110112102012
4310212002102320230231110
5220304304413043430400
62135543211314203352
766502520343515612
oct6446022270545524
91110006245415365
10231312223030100
1167780a6566aa63
1221b39a37583558
139c0b858c18a44
1441197dda326b2
151bb1e65db6d35
hexd26092e2cb54

231312223030100 has 72 divisors (see below), whose sum is σ = 530032585222560. Its totient is φ = 87378643278720.

The previous prime is 231312223030073. The next prime is 231312223030111. The reversal of 231312223030100 is 1030322213132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191421794 + ... + 192626393.

Almost surely, 2231312223030100 is an apocalyptic number.

231312223030100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231312223030100 is an abundant number, since it is smaller than the sum of its proper divisors (298720362192460).

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

231312223030100 is a wasteful number, since it uses less digits than its factorization.

231312223030100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384048537 (or 384048530 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231312223030100 its reverse (1030322213132), we get a palindrome (232342545243232).

The spelling of 231312223030100 in words is "two hundred thirty-one trillion, three hundred twelve billion, two hundred twenty-three million, thirty thousand, one hundred".

Divisors: 1 2 4 5 10 19 20 25 38 50 76 95 100 190 317 380 475 634 950 1268 1585 1900 3170 6023 6340 7925 12046 15850 24092 30115 31700 60230 120460 150575 301150 602300 384048187 768096374 1536192748 1920240935 3840481870 7296915553 7680963740 9601204675 14593831106 19202409350 29187662212 36484577765 38404818700 72969155530 121743275279 145938311060 182422888825 243486550558 364845777650 486973101116 608716376395 729691555300 1217432752790 2313122230301 2434865505580 3043581881975 4626244460602 6087163763950 9252488921204 11565611151505 12174327527900 23131222303010 46262444606020 57828055757525 115656111515050 231312223030100