31201242402 has 16 divisors (see below), whose sum is σ = 68075438112. Its totient is φ = 9454921920.

The previous prime is 31201242379. The next prime is 31201242439. The reversal of 31201242402 is 20424210213.

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, 236372983 + ... + 236373114.

It is an arithmetic number, because the mean of its divisors is an integer number (4254714882).

Almost surely, 2^31201242402 is an apocalyptic number.

31201242402 is an abundant number, since it is smaller than the sum of its proper divisors (36874195710).

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

31201242402 is a wasteful number, since it uses less digits than its factorization.

31201242402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472746113.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 31201242402 its reverse (20424210213), we get a palindrome (51625452615).

The spelling of 31201242402 in words is "thirty-one billion, two hundred one million, two hundred forty-two thousand, four hundred two".