31252005051 has 4 divisors (see below), whose sum is σ = 41669340072. Its totient is φ = 20834670032.

The previous prime is 31252005047. The next prime is 31252005137. The reversal of 31252005051 is 15050025213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31252005051 - 2² = 31252005047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31252005151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5208667506 + ... + 5208667511.

It is an arithmetic number, because the mean of its divisors is an integer number (10417335018).

Almost surely, 2^31252005051 is an apocalyptic number.

31252005051 is a deficient number, since it is larger than the sum of its proper divisors (10417335021).

31252005051 is a wasteful number, since it uses less digits than its factorization.

31252005051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10417335020.

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 31252005051 in words is "thirty-one billion, two hundred fifty-two million, five thousand, fifty-one".