1312100131 has 4 divisors (see below), whose sum is σ = 1312869600. Its totient is φ = 1311330664.

The previous prime is 1312100117. The next prime is 1312100149. The reversal of 1312100131 is 1310012131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1310012131 = 2711 ⋅483221.

It is a cyclic number.

It is not a de Polignac number, because 1312100131 - 2⁷ = 1312100003 is a prime.

It is a super-2 number, since 2×1312100131² = 3443213507540434322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312103131) 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, 382171 + ... + 385588.

It is an arithmetic number, because the mean of its divisors is an integer number (328217400).

Almost surely, 2^1312100131 is an apocalyptic number.

1312100131 is a deficient number, since it is larger than the sum of its proper divisors (769469).

1312100131 is an equidigital number, since it uses as much as digits as its factorization.

1312100131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769468.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1312100131 is about 36222.9227285706. The cubic root of 1312100131 is about 1094.7685842219.

Adding to 1312100131 its reverse (1310012131), we get a palindrome (2622112262).

The spelling of 1312100131 in words is "one billion, three hundred twelve million, one hundred thousand, one hundred thirty-one".