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23311330120 = 23513149300869
BaseRepresentation
bin10101101101011101…
…101010101101001000
32020011121101021020001
4111231131222231020
5340220200030440
614413054412344
71453451015401
oct255535525510
966147337201
1023311330120
119982702391
124626b010b4
132276726080
1411b1db09a8
1591680ab9a
hex56d76ab48

23311330120 has 64 divisors (see below), whose sum is σ = 56864430000. Its totient is φ = 8549465088.

The previous prime is 23311330111. The next prime is 23311330153. The reversal of 23311330120 is 2103311332.

It can be written as a sum of positive squares in 8 ways, for example, as 7012722564 + 16298607556 = 83742^2 + 127666^2 .

It is a super-2 number, since 2×233113301202 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72955 + ... + 227914.

Almost surely, 223311330120 is an apocalyptic number.

23311330120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311330120 is an abundant number, since it is smaller than the sum of its proper divisors (33553099880).

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

23311330120 is a wasteful number, since it uses less digits than its factorization.

23311330120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301042 (or 301038 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23311330120 its reverse (2103311332), we get a palindrome (25414641452).

The spelling of 23311330120 in words is "twenty-three billion, three hundred eleven million, three hundred thirty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 149 260 298 520 596 745 1192 1490 1937 2980 3874 5960 7748 9685 15496 19370 38740 77480 300869 601738 1203476 1504345 2406952 3008690 3911297 6017380 7822594 12034760 15645188 19556485 31290376 39112970 44829481 78225940 89658962 156451880 179317924 224147405 358635848 448294810 582783253 896589620 1165566506 1793179240 2331133012 2913916265 4662266024 5827832530 11655665060 23311330120