1312502131 has 2 divisors, whose sum is σ = 1312502132. Its totient is φ = 1312502130.

The previous prime is 1312502071. The next prime is 1312502137. The reversal of 1312502131 is 1312052131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312502131 - 2⁷ = 1312502003 is a prime.

It is a super-2 number, since 2×1312502131² = 3445323687759082322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312502099 and 1312502108.

It is not a weakly prime, because it can be changed into another prime (1312502137) 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, 656251065 + 656251066.

It is an arithmetic number, because the mean of its divisors is an integer number (656251066).

Almost surely, 2^1312502131 is an apocalyptic number.

1312502131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312502131 is an equidigital number, since it uses as much as digits as its factorization.

1312502131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1312502131 is about 36228.4712760558. The cubic root of 1312502131 is about 1094.8803775275.

Adding to 1312502131 its reverse (1312052131), we get a palindrome (2624554262).

The spelling of 1312502131 in words is "one billion, three hundred twelve million, five hundred two thousand, one hundred thirty-one".