31156740222 has 16 divisors (see below), whose sum is σ = 63762631680. Its totient is φ = 10144054872.

The previous prime is 31156740187. The next prime is 31156740233. The reversal of 31156740222 is 22204765113.

It is a super-2 number, since 2×31156740222² (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, 60381022 + ... + 60381537.

It is an arithmetic number, because the mean of its divisors is an integer number (3985164480).

Almost surely, 2^31156740222 is an apocalyptic number.

31156740222 is an abundant number, since it is smaller than the sum of its proper divisors (32605891458).

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

31156740222 is a wasteful number, since it uses less digits than its factorization.

31156740222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120762607.

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 31156740222 in words is "thirty-one billion, one hundred fifty-six million, seven hundred forty thousand, two hundred twenty-two".