31112162112305 has 64 divisors (see below), whose sum is σ = 40373594173440. Its totient is φ = 22948616908800.

The previous prime is 31112162112271. The next prime is 31112162112319. The reversal of 31112162112305 is 50321126121113.

It is a happy number.

It is not a de Polignac number, because 31112162112305 - 2²⁰ = 31112161063729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1075749245 + ... + 1075778165.

It is an arithmetic number, because the mean of its divisors is an integer number (630837408960).

Almost surely, 2^{31112162112305} is an apocalyptic number.

It is an amenable number.

31112162112305 is a deficient number, since it is larger than the sum of its proper divisors (9261432061135).

31112162112305 is a wasteful number, since it uses less digits than its factorization.

31112162112305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30162.

The product of its (nonzero) digits is 2160, while the sum is 29.

Adding to 31112162112305 its reverse (50321126121113), we get a palindrome (81433288233418).

The spelling of 31112162112305 in words is "thirty-one trillion, one hundred twelve billion, one hundred sixty-two million, one hundred twelve thousand, three hundred five".