252939831 has 4 divisors (see below), whose sum is σ = 337253112. Its totient is φ = 168626552.

The previous prime is 252939823. The next prime is 252939839. The reversal of 252939831 is 138939252.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (252939823) and next prime (252939839).

It is a cyclic number.

It is not a de Polignac number, because 252939831 - 2³ = 252939823 is a prime.

It is a super-2 number, since 2×252939831² = 127957116212617122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252939839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42156636 + ... + 42156641.

It is an arithmetic number, because the mean of its divisors is an integer number (84313278).

Almost surely, 2^252939831 is an apocalyptic number.

252939831 is a deficient number, since it is larger than the sum of its proper divisors (84313281).

252939831 is an equidigital number, since it uses as much as digits as its factorization.

252939831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84313280.

The product of its digits is 116640, while the sum is 42.

The square root of 252939831 is about 15904.0822118096. The cubic root of 252939831 is about 632.4202118833.

The spelling of 252939831 in words is "two hundred fifty-two million, nine hundred thirty-nine thousand, eight hundred thirty-one".