252131136 has 56 divisors (see below), whose sum is σ = 668450784. Its totient is φ = 83873280.

The previous prime is 252131111. The next prime is 252131141. The reversal of 252131136 is 631131252.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124371 + ... + 126381.

Almost surely, 2^252131136 is an apocalyptic number.

It is an amenable number.

252131136 is an abundant number, since it is smaller than the sum of its proper divisors (416319648).

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

252131136 is a wasteful number, since it uses less digits than its factorization.

252131136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679 (or 2669 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 252131136 is about 15878.6377249435. The cubic root of 252131136 is about 631.7455045403.

Adding to 252131136 its reverse (631131252), we get a palindrome (883262388).

The spelling of 252131136 in words is "two hundred fifty-two million, one hundred thirty-one thousand, one hundred thirty-six".