1312311029 has 2 divisors, whose sum is σ = 1312311030. Its totient is φ = 1312311028.

The previous prime is 1312310983. The next prime is 1312311043. The reversal of 1312311029 is 9201132131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1292043025 + 20268004 = 35945^2 + 4502^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312311029 - 2⁸ = 1312310773 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1312310995 and 1312311013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312311929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656155514 + 656155515.

It is an arithmetic number, because the mean of its divisors is an integer number (656155515).

Almost surely, 2^1312311029 is an apocalyptic number.

It is an amenable number.

1312311029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312311029 is an equidigital number, since it uses as much as digits as its factorization.

1312311029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1312311029 is about 36225.8337240152. The cubic root of 1312311029 is about 1094.8272362841.

The spelling of 1312311029 in words is "one billion, three hundred twelve million, three hundred eleven thousand, twenty-nine".