253955431 has 2 divisors, whose sum is σ = 253955432. Its totient is φ = 253955430.

The previous prime is 253955417. The next prime is 253955453. The reversal of 253955431 is 134559352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253955431 - 2⁵ = 253955399 is a prime.

It is a super-2 number, since 2×253955431² = 128986721868791522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253955491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126977715 + 126977716.

It is an arithmetic number, because the mean of its divisors is an integer number (126977716).

Almost surely, 2^253955431 is an apocalyptic number.

253955431 is a deficient number, since it is larger than the sum of its proper divisors (1).

253955431 is an equidigital number, since it uses as much as digits as its factorization.

253955431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 37.

The square root of 253955431 is about 15935.9791352775. The cubic root of 253955431 is about 633.2655094190.

It can be divided in two parts, 2539 and 55431, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 253955431 in words is "two hundred fifty-three million, nine hundred fifty-five thousand, four hundred thirty-one".