1312120000331 has 4 divisors (see below), whose sum is σ = 1499565714672. Its totient is φ = 1124674285992.

The previous prime is 1312120000319. The next prime is 1312120000393. The reversal of 1312120000331 is 1330000212131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312120000331 is a prime.

It is a super-2 number, since 2×1312120000331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312120002331) 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, 93722857160 + ... + 93722857173.

It is an arithmetic number, because the mean of its divisors is an integer number (374891428668).

Almost surely, 2^{1312120000331} is an apocalyptic number.

1312120000331 is a deficient number, since it is larger than the sum of its proper divisors (187445714341).

1312120000331 is an equidigital number, since it uses as much as digits as its factorization.

1312120000331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187445714340.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1312120000331 its reverse (1330000212131), we get a palindrome (2642120212462).

The spelling of 1312120000331 in words is "one trillion, three hundred twelve billion, one hundred twenty million, three hundred thirty-one", and thus it is an aban number.