31200540402 has 16 divisors (see below), whose sum is σ = 66071732832. Its totient is φ = 9788404800.

The previous prime is 31200540353. The next prime is 31200540463. The reversal of 31200540402 is 20404500213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152943724 + ... + 152943927.

It is an arithmetic number, because the mean of its divisors is an integer number (4129483302).

Almost surely, 2^31200540402 is an apocalyptic number.

31200540402 is an abundant number, since it is smaller than the sum of its proper divisors (34871192430).

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

31200540402 is a wasteful number, since it uses less digits than its factorization.

31200540402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305887673.

The product of its (nonzero) digits is 960, while the sum is 21.

The spelling of 31200540402 in words is "thirty-one billion, two hundred million, five hundred forty thousand, four hundred two".