253312331 has 2 divisors, whose sum is σ = 253312332. Its totient is φ = 253312330.

The previous prime is 253312289. The next prime is 253312333. The reversal of 253312331 is 133213352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253312331 - 2²⁶ = 186203467 is a prime.

It is a super-2 number, since 2×253312331² = 128334274073307122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 253312333, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 253312297 and 253312306.

It is not a weakly prime, because it can be changed into another prime (253312333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126656165 + 126656166.

It is an arithmetic number, because the mean of its divisors is an integer number (126656166).

Almost surely, 2^253312331 is an apocalyptic number.

253312331 is a deficient number, since it is larger than the sum of its proper divisors (1).

253312331 is an equidigital number, since it uses as much as digits as its factorization.

253312331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 23.

The square root of 253312331 is about 15915.7887332045. The cubic root of 253312331 is about 632.7305109498.

Adding to 253312331 its reverse (133213352), we get a palindrome (386525683).

The spelling of 253312331 in words is "two hundred fifty-three million, three hundred twelve thousand, three hundred thirty-one".