252131330 has 64 divisors (see below), whose sum is σ = 525985920. Its totient is φ = 86771520.

The previous prime is 252131323. The next prime is 252131333. The reversal of 252131330 is 33131252.

It is not an unprimeable number, because it can be changed into a prime (252131333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252392 + ... + 253388.

It is an arithmetic number, because the mean of its divisors is an integer number (8218530).

Almost surely, 2^252131330 is an apocalyptic number.

252131330 is an abundant number, since it is smaller than the sum of its proper divisors (273854590).

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

252131330 is a wasteful number, since it uses less digits than its factorization.

252131330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 252131330 is about 15878.6438337788. The cubic root of 252131330 is about 631.7456665705.

Adding to 252131330 its reverse (33131252), we get a palindrome (285262582).

The spelling of 252131330 in words is "two hundred fifty-two million, one hundred thirty-one thousand, three hundred thirty".