1312929641 has 2 divisors, whose sum is σ = 1312929642. Its totient is φ = 1312929640.

The previous prime is 1312929617. The next prime is 1312929649. The reversal of 1312929641 is 1469292131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 892515625 + 420414016 = 29875^2 + 20504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312929641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312929595 and 1312929604.

It is not a weakly prime, because it can be changed into another prime (1312929649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656464820 + 656464821.

It is an arithmetic number, because the mean of its divisors is an integer number (656464821).

Almost surely, 2^1312929641 is an apocalyptic number.

It is an amenable number.

1312929641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312929641 is an equidigital number, since it uses as much as digits as its factorization.

1312929641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 1312929641 is about 36234.3709894349. The cubic root of 1312929641 is about 1094.9992399375. Note that the first 3 decimals are identical.

The spelling of 1312929641 in words is "one billion, three hundred twelve million, nine hundred twenty-nine thousand, six hundred forty-one".