31252013104 has 80 divisors (see below), whose sum is σ = 69295752288. Its totient is φ = 13526102016.

The previous prime is 31252013077. The next prime is 31252013113. The reversal of 31252013104 is 40131025213.

It is a happy 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, 963519 + ... + 995425.

Almost surely, 2^31252013104 is an apocalyptic number.

31252013104 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31252013104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34647876144).

31252013104 is an abundant number, since it is smaller than the sum of its proper divisors (38043739184).

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

31252013104 is a wasteful number, since it uses less digits than its factorization.

31252013104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32222 (or 32216 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 31252013104 its reverse (40131025213), we get a palindrome (71383038317).

The spelling of 31252013104 in words is "thirty-one billion, two hundred fifty-two million, thirteen thousand, one hundred four".