253131 has 4 divisors (see below), whose sum is σ = 337512. Its totient is φ = 168752.

The previous prime is 253109. The next prime is 253133. The reversal of 253131 is 131352.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 253131 - 2⁷ = 253003 is a prime.

It is a super-2 number, since 2×253131² = 128150606322, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 253131.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253131.

It is not an unprimeable number, because it can be changed into a prime (253133) 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, 42186 + ... + 42191.

It is an arithmetic number, because the mean of its divisors is an integer number (84378).

2²⁵³¹³¹ is an apocalyptic number.

253131 is a deficient number, since it is larger than the sum of its proper divisors (84381).

253131 is an equidigital number, since it uses as much as digits as its factorization.

253131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84380.

The product of its digits is 90, while the sum is 15.

The square root of 253131 is about 503.1212577501. The cubic root of 253131 is about 63.2579497056.

Subtracting from 253131 its sum of digits (15), we obtain a triangular number (253116 = T₇₁₁).

Adding to 253131 its reverse (131352), we get a palindrome (384483).

The spelling of 253131 in words is "two hundred fifty-three thousand, one hundred thirty-one".