253365231 has 12 divisors (see below), whose sum is σ = 392974872. Its totient is φ = 144780048.

The previous prime is 253365223. The next prime is 253365239. The reversal of 253365231 is 132563352.

It is an interprime number because it is at equal distance from previous prime (253365223) and next prime (253365239).

It is not a de Polignac number, because 253365231 - 2³ = 253365223 is a prime.

It is a super-2 number, since 2×253365231² = 128387880559366722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253365239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 861640 + ... + 861933.

It is an arithmetic number, because the mean of its divisors is an integer number (32747906).

Almost surely, 2^253365231 is an apocalyptic number.

253365231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

253365231 is a deficient number, since it is larger than the sum of its proper divisors (139609641).

253365231 is a wasteful number, since it uses less digits than its factorization.

253365231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723590 (or 1723583 counting only the distinct ones).

The product of its digits is 16200, while the sum is 30.

The square root of 253365231 is about 15917.4505182206. The cubic root of 253365231 is about 632.7745529094.

The spelling of 253365231 in words is "two hundred fifty-three million, three hundred sixty-five thousand, two hundred thirty-one".