31112132122320 has 160 divisors (see below), whose sum is σ = 102685205226240. Its totient is φ = 7765393858560.

The previous prime is 31112132122301. The next prime is 31112132122333. The reversal of 31112132122320 is 2322123121113.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20326500 + ... + 21803459.

It is an arithmetic number, because the mean of its divisors is an integer number (641782532664).

Almost surely, 2^{31112132122320} is an apocalyptic number.

31112132122320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31112132122320 is an abundant number, since it is smaller than the sum of its proper divisors (71573073103920).

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

31112132122320 is a wasteful number, since it uses less digits than its factorization.

31112132122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42130173 (or 42130167 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 31112132122320 its reverse (2322123121113), we get a palindrome (33434255243433).

The spelling of 31112132122320 in words is "thirty-one trillion, one hundred twelve billion, one hundred thirty-two million, one hundred twenty-two thousand, three hundred twenty".