252207631 has 16 divisors (see below), whose sum is σ = 291894624. Its totient is φ = 215829504.

The previous prime is 252207589. The next prime is 252207731. The reversal of 252207631 is 136702252.

It is a cyclic number.

It is not a de Polignac number, because 252207631 - 2⁹ = 252207119 is a prime.

It is a super-2 number, since 2×252207631² = 127217378269264322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252207631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252207331) 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, 6291 + ... + 23323.

It is an arithmetic number, because the mean of its divisors is an integer number (18243414).

Almost surely, 2^252207631 is an apocalyptic number.

252207631 is a deficient number, since it is larger than the sum of its proper divisors (39686993).

252207631 is a wasteful number, since it uses less digits than its factorization.

252207631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17130.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 252207631 is about 15881.0462816529. The cubic root of 252207631 is about 631.8093872837.

Adding to 252207631 its reverse (136702252), we get a palindrome (388909883).

The spelling of 252207631 in words is "two hundred fifty-two million, two hundred seven thousand, six hundred thirty-one".