253813831 has 2 divisors, whose sum is σ = 253813832. Its totient is φ = 253813830.

The previous prime is 253813823. The next prime is 253813841. The reversal of 253813831 is 138318352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253813831 - 2³ = 253813823 is a prime.

It is a super-2 number, since 2×253813831² = 128842921613793122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253813801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126906915 + 126906916.

It is an arithmetic number, because the mean of its divisors is an integer number (126906916).

Almost surely, 2^253813831 is an apocalyptic number.

253813831 is a deficient number, since it is larger than the sum of its proper divisors (1).

253813831 is an equidigital number, since it uses as much as digits as its factorization.

253813831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 253813831 is about 15931.5357389048. The cubic root of 253813831 is about 633.1477891993.

The spelling of 253813831 in words is "two hundred fifty-three million, eight hundred thirteen thousand, eight hundred thirty-one".