252131394 has 32 divisors (see below), whose sum is σ = 535763520. Its totient is φ = 78950592.

The previous prime is 252131381. The next prime is 252131413. The reversal of 252131394 is 493131252.

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, 13144 + ... + 26019.

It is an arithmetic number, because the mean of its divisors is an integer number (16742610).

Almost surely, 2^252131394 is an apocalyptic number.

252131394 is an abundant number, since it is smaller than the sum of its proper divisors (283632126).

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

252131394 is a wasteful number, since it uses less digits than its factorization.

252131394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39234.

The product of its digits is 6480, while the sum is 30.

The square root of 252131394 is about 15878.6458490641. The cubic root of 252131394 is about 631.7457200237.

The spelling of 252131394 in words is "two hundred fifty-two million, one hundred thirty-one thousand, three hundred ninety-four".