31204457032 has 64 divisors (see below), whose sum is σ = 71209653120. Its totient is φ = 12513850368.

The previous prime is 31204457027. The next prime is 31204457051. The reversal of 31204457032 is 23075440213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31204456985 and 31204457003.

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, 69963 + ... + 259429.

It is an arithmetic number, because the mean of its divisors is an integer number (1112650830).

Almost surely, 2^31204457032 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 31204457032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35604826560).

31204457032 is an abundant number, since it is smaller than the sum of its proper divisors (40005196088).

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

31204457032 is a wasteful number, since it uses less digits than its factorization.

31204457032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189670 (or 189666 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

Adding to 31204457032 its reverse (23075440213), we get a palindrome (54279897245).

The spelling of 31204457032 in words is "thirty-one billion, two hundred four million, four hundred fifty-seven thousand, thirty-two".