1312074957 has 4 divisors (see below), whose sum is σ = 1749433280. Its totient is φ = 874716636.

The previous prime is 1312074949. The next prime is 1312074961. The reversal of 1312074957 is 7594702131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7594702131 = 3 ⋅2531567377.

It is not a de Polignac number, because 1312074957 - 2³ = 1312074949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312074937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218679157 + ... + 218679162.

It is an arithmetic number, because the mean of its divisors is an integer number (437358320).

Almost surely, 2^1312074957 is an apocalyptic number.

It is an amenable number.

1312074957 is a deficient number, since it is larger than the sum of its proper divisors (437358323).

1312074957 is an equidigital number, since it uses as much as digits as its factorization.

1312074957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437358322.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 1312074957 is about 36222.5752397590. The cubic root of 1312074957 is about 1094.7615827540.

The spelling of 1312074957 in words is "one billion, three hundred twelve million, seventy-four thousand, nine hundred fifty-seven".