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31001111092 = 2274312568869
BaseRepresentation
bin11100110111110011…
…110110101000110100
32222000112001121121201
4130313303312220310
51001442241023332
622124113222244
72145144045040
oct346763665064
988015047551
1031001111092
1112169356676
126012261984
132c00900c23
1417013a5020
15c169795e7
hex737cf6a34

31001111092 has 24 divisors (see below), whose sum is σ = 62146103040. Its totient is φ = 13255358880.

The previous prime is 31001111069. The next prime is 31001111111. The reversal of 31001111092 is 29011110013.

It is a super-2 number, since 2×310011110922 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1272367 + ... + 1296502.

It is an arithmetic number, because the mean of its divisors is an integer number (2589420960).

Almost surely, 231001111092 is an apocalyptic number.

It is an amenable number.

31001111092 is an abundant number, since it is smaller than the sum of its proper divisors (31144991948).

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

31001111092 is a wasteful number, since it uses less digits than its factorization.

31001111092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569311 (or 2569309 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 19.

The spelling of 31001111092 in words is "thirty-one billion, one million, one hundred eleven thousand, ninety-two".

Divisors: 1 2 4 7 14 28 431 862 1724 3017 6034 12068 2568869 5137738 10275476 17982083 35964166 71928332 1107182539 2214365078 4428730156 7750277773 15500555546 31001111092