1316137531 has 2 divisors, whose sum is σ = 1316137532. Its totient is φ = 1316137530.

The previous prime is 1316137517. The next prime is 1316137549. The reversal of 1316137531 is 1357316131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1316137531 - 2⁹ = 1316137019 is a prime.

It is a super-2 number, since 2×1316137531² = 3464436001013551922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1316137493 and 1316137502.

It is not a weakly prime, because it can be changed into another prime (1316137561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658068765 + 658068766.

It is an arithmetic number, because the mean of its divisors is an integer number (658068766).

Almost surely, 2^1316137531 is an apocalyptic number.

1316137531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316137531 is an equidigital number, since it uses as much as digits as its factorization.

1316137531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 31.

The square root of 1316137531 is about 36278.6098272798. The cubic root of 1316137531 is about 1095.8903209882.

The spelling of 1316137531 in words is "one billion, three hundred sixteen million, one hundred thirty-seven thousand, five hundred thirty-one".