1313323057 has 2 divisors, whose sum is σ = 1313323058. Its totient is φ = 1313323056.

The previous prime is 1313323051. The next prime is 1313323127. The reversal of 1313323057 is 7503233131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1250612496 + 62710561 = 35364^2 + 7919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313323057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313323051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656661528 + 656661529.

It is an arithmetic number, because the mean of its divisors is an integer number (656661529).

Almost surely, 2^1313323057 is an apocalyptic number.

It is an amenable number.

1313323057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313323057 is an equidigital number, since it uses as much as digits as its factorization.

1313323057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 28.

The square root of 1313323057 is about 36239.7993509898. The cubic root of 1313323057 is about 1095.1086002531.

Adding to 1313323057 its reverse (7503233131), we get a palindrome (8816556188).

The spelling of 1313323057 in words is "one billion, three hundred thirteen million, three hundred twenty-three thousand, fifty-seven".