31525723464 has 64 divisors (see below), whose sum is σ = 80241408000. Its totient is φ = 10318701120.

The previous prime is 31525723409. The next prime is 31525723483. The reversal of 31525723464 is 46432752513.

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 15 ways as a sum of consecutive naturals, for example, 1277757 + ... + 1302195.

It is an arithmetic number, because the mean of its divisors is an integer number (1253772000).

Almost surely, 2^31525723464 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 31525723464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40120704000).

31525723464 is an abundant number, since it is smaller than the sum of its proper divisors (48715684536).

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

31525723464 is a wasteful number, since it uses less digits than its factorization.

31525723464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25418 (or 25414 counting only the distinct ones).

The product of its digits is 604800, while the sum is 42.

The spelling of 31525723464 in words is "thirty-one billion, five hundred twenty-five million, seven hundred twenty-three thousand, four hundred sixty-four".