31052500000 has 96 divisors (see below), whose sum is σ = 76424218416. Its totient is φ = 12420000000.

The previous prime is 31052499991. The next prime is 31052500013. The reversal of 31052500000 is 525013.

It can be written as a sum of positive squares in 8 ways, for example, as 21394327824 + 9658172176 = 146268^2 + 98276^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 2493790 + ... + 2506210.

Almost surely, 2^31052500000 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 31052500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38212109208).

31052500000 is an abundant number, since it is smaller than the sum of its proper divisors (45371718416).

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

31052500000 is an frugal number, since it uses more digits than its factorization.

31052500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12466 (or 12428 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The spelling of 31052500000 in words is "thirty-one billion, fifty-two million, five hundred thousand".