1312075393 has 2 divisors, whose sum is σ = 1312075394. Its totient is φ = 1312075392.

The previous prime is 1312075379. The next prime is 1312075397. The reversal of 1312075393 is 3935702131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1293697024 + 18378369 = 35968^2 + 4287^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312075393 - 2⁵ = 1312075361 is a prime.

It is a super-2 number, since 2×1312075393² = 3443083673832208898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1312075397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656037696 + 656037697.

It is an arithmetic number, because the mean of its divisors is an integer number (656037697).

Almost surely, 2^1312075393 is an apocalyptic number.

It is an amenable number.

1312075393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312075393 is an equidigital number, since it uses as much as digits as its factorization.

1312075393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 1312075393 is about 36222.5812581047. The cubic root of 1312075393 is about 1094.7617040164.

The spelling of 1312075393 in words is "one billion, three hundred twelve million, seventy-five thousand, three hundred ninety-three".