312120303021213 has 32 divisors (see below), whose sum is σ = 434783890287360. Its totient is φ = 198910993881600.

The previous prime is 312120303021161. The next prime is 312120303021287.

312120303021213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 312120303021213 - 2²⁸ = 312120034585757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312120303025213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377137681 + ... + 377964377.

It is an arithmetic number, because the mean of its divisors is an integer number (13586996571480).

Almost surely, 2^{312120303021213} is an apocalyptic number.

It is an amenable number.

312120303021213 is a deficient number, since it is larger than the sum of its proper divisors (122663587266147).

312120303021213 is a wasteful number, since it uses less digits than its factorization.

312120303021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869797.

The product of its (nonzero) digits is 1296, while the sum is 24.

It can be divided in two parts, 31212030 and 3021213, that added together give a palindrome (34233243).

The spelling of 312120303021213 in words is "three hundred twelve trillion, one hundred twenty billion, three hundred three million, twenty-one thousand, two hundred thirteen".