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31022422013 = 112302384811
BaseRepresentation
bin11100111001000101…
…001001011111111101
32222002000011022201002
4130321011021133331
51002013220001023
622130154100045
72145523144022
oct347105113775
988060138632
1031022422013
111217a391900
12601941a625
132c05152c3b
141704151549
15c18788b28
hex7391497fd

31022422013 has 12 divisors (see below), whose sum is σ = 34110707904. Its totient is φ = 28192540200.

The previous prime is 31022422009. The next prime is 31022422027.

31022422013 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31022422013 - 22 = 31022422009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31022425013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 323378 + ... + 408188.

It is an arithmetic number, because the mean of its divisors is an integer number (2842558992).

Almost surely, 231022422013 is an apocalyptic number.

It is an amenable number.

31022422013 is a deficient number, since it is larger than the sum of its proper divisors (3088285891).

31022422013 is a wasteful number, since it uses less digits than its factorization.

31022422013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87856 (or 87845 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The spelling of 31022422013 in words is "thirty-one billion, twenty-two million, four hundred twenty-two thousand, thirteen".

Divisors: 1 11 121 3023 33253 84811 365783 932921 10262131 256383653 2820220183 31022422013