31912012932 has 96 divisors (see below), whose sum is σ = 83096186880. Its totient is φ = 9488741760.

The previous prime is 31912012921. The next prime is 31912012981. The reversal of 31912012932 is 23921021913.

It is a junction number, because it is equal to n+sod(n) for n = 31912012893 and 31912012902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200503 + ... + 322529.

It is an arithmetic number, because the mean of its divisors is an integer number (865585280).

Almost surely, 2^31912012932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31912012932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41548093440).

31912012932 is an abundant number, since it is smaller than the sum of its proper divisors (51184173948).

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

31912012932 is a wasteful number, since it uses less digits than its factorization.

31912012932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122121 (or 122119 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The spelling of 31912012932 in words is "thirty-one billion, nine hundred twelve million, twelve thousand, nine hundred thirty-two".