1316605831 has 2 divisors, whose sum is σ = 1316605832. Its totient is φ = 1316605830.

The previous prime is 1316605819. The next prime is 1316605837. The reversal of 1316605831 is 1385066131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1316605831 - 2⁹ = 1316605319 is a prime.

It is a super-2 number, since 2×1316605831² = 3466901828446401122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316605837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658302915 + 658302916.

It is an arithmetic number, because the mean of its divisors is an integer number (658302916).

Almost surely, 2^1316605831 is an apocalyptic number.

1316605831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316605831 is an equidigital number, since it uses as much as digits as its factorization.

1316605831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1316605831 is about 36285.0634696978. The cubic root of 1316605831 is about 1096.0202832372.

The spelling of 1316605831 in words is "one billion, three hundred sixteen million, six hundred five thousand, eight hundred thirty-one".