252431530 has 32 divisors (see below), whose sum is σ = 515088000. Its totient is φ = 88299072.

The previous prime is 252431507. The next prime is 252431537. The reversal of 252431530 is 35134252.

It is a junction number, because it is equal to n+sod(n) for n = 252431495 and 252431504.

It is not an unprimeable number, because it can be changed into a prime (252431537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48630 + ... + 53569.

It is an arithmetic number, because the mean of its divisors is an integer number (16096500).

Almost surely, 2^252431530 is an apocalyptic number.

252431530 is an abundant number, since it is smaller than the sum of its proper divisors (262656470).

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

252431530 is a wasteful number, since it uses less digits than its factorization.

252431530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102238.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 252431530 is about 15888.0939700142. The cubic root of 252431530 is about 631.9962963117.

Adding to 252431530 its reverse (35134252), we get a palindrome (287565782).

The spelling of 252431530 in words is "two hundred fifty-two million, four hundred thirty-one thousand, five hundred thirty".