31252463664 has 80 divisors (see below), whose sum is σ = 84288605184. Its totient is φ = 9959488000.

The previous prime is 31252463663. The next prime is 31252463677. The reversal of 31252463664 is 46636425213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31252463663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2589484 + ... + 2601524.

Almost surely, 2^31252463664 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 31252463664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42144302592).

31252463664 is an abundant number, since it is smaller than the sum of its proper divisors (53036141520).

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

31252463664 is a wasteful number, since it uses less digits than its factorization.

31252463664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14426 (or 14420 counting only the distinct ones).

The product of its digits is 622080, while the sum is 42.

Adding to 31252463664 its reverse (46636425213), we get a palindrome (77888888877).

The spelling of 31252463664 in words is "thirty-one billion, two hundred fifty-two million, four hundred sixty-three thousand, six hundred sixty-four".