253311431 has 2 divisors, whose sum is σ = 253311432. Its totient is φ = 253311430.

The previous prime is 253311427. The next prime is 253311449. The reversal of 253311431 is 134113352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253311431 - 2² = 253311427 is a prime.

It is a super-2 number, since 2×253311431² = 128333362150535522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253311397 and 253311406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253311451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126655715 + 126655716.

It is an arithmetic number, because the mean of its divisors is an integer number (126655716).

Almost surely, 2^253311431 is an apocalyptic number.

253311431 is a deficient number, since it is larger than the sum of its proper divisors (1).

253311431 is an equidigital number, since it uses as much as digits as its factorization.

253311431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 253311431 is about 15915.7604593686. The cubic root of 253311431 is about 632.7297616007.

Adding to 253311431 its reverse (134113352), we get a palindrome (387424783).

It can be divided in two parts, 25331 and 1431, that added together give a palindrome (26762).

The spelling of 253311431 in words is "two hundred fifty-three million, three hundred eleven thousand, four hundred thirty-one".