31940241232 has 80 divisors (see below), whose sum is σ = 66310845120. Its totient is φ = 14858726400.

The previous prime is 31940241227. The next prime is 31940241269. The reversal of 31940241232 is 23214204913.

It is a junction number, because it is equal to n+sod(n) for n = 31940241194 and 31940241203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21565932 + ... + 21567412.

It is an arithmetic number, because the mean of its divisors is an integer number (828885564).

Almost surely, 2^31940241232 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 31940241232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33155422560).

31940241232 is an abundant number, since it is smaller than the sum of its proper divisors (34370603888).

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

31940241232 is a wasteful number, since it uses less digits than its factorization.

31940241232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732 (or 2726 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 31940241232 in words is "thirty-one billion, nine hundred forty million, two hundred forty-one thousand, two hundred thirty-two".