253113931 has 4 divisors (see below), whose sum is σ = 289273072. Its totient is φ = 216954792.

The previous prime is 253113851. The next prime is 253113947. The reversal of 253113931 is 139311352.

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 253113931 - 2⁷ = 253113803 is a prime.

It is a super-2 number, since 2×253113931² = 128133324132545522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253113931.

It is not an unprimeable number, because it can be changed into a prime (253113961) 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, 18079560 + ... + 18079573.

It is an arithmetic number, because the mean of its divisors is an integer number (72318268).

Almost surely, 2^253113931 is an apocalyptic number.

253113931 is a deficient number, since it is larger than the sum of its proper divisors (36159141).

253113931 is an equidigital number, since it uses as much as digits as its factorization.

253113931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36159140.

The product of its digits is 2430, while the sum is 28.

The square root of 253113931 is about 15909.5547077849. The cubic root of 253113931 is about 632.5652781444.

The spelling of 253113931 in words is "two hundred fifty-three million, one hundred thirteen thousand, nine hundred thirty-one".