2557315331 has 2 divisors, whose sum is σ = 2557315332. Its totient is φ = 2557315330.

The previous prime is 2557315303. The next prime is 2557315339. The reversal of 2557315331 is 1335137552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2557315331 is a prime.

It is a super-2 number, since 2×2557315331² = 13079723404335279122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2557315291 and 2557315300.

It is not a weakly prime, because it can be changed into another prime (2557315339) 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, 1278657665 + 1278657666.

It is an arithmetic number, because the mean of its divisors is an integer number (1278657666).

Almost surely, 2^2557315331 is an apocalyptic number.

2557315331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557315331 is an equidigital number, since it uses as much as digits as its factorization.

2557315331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47250, while the sum is 35.

The square root of 2557315331 is about 50569.9053884818. The cubic root of 2557315331 is about 1367.5023901423.

It can be divided in two parts, 25573 and 15331, that added together give a palindrome (40904).

The spelling of 2557315331 in words is "two billion, five hundred fifty-seven million, three hundred fifteen thousand, three hundred thirty-one".