312404303404213 has 4 divisors (see below), whose sum is σ = 312404348890368. Its totient is φ = 312404257918060.

The previous prime is 312404303404181. The next prime is 312404303404229.

312404303404213 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 312404303404213 - 2⁵ = 312404303404181 is a prime.

It is a super-2 number, since 2×312404303404213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312404303404243) 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, 10096981 + ... + 26958442.

It is an arithmetic number, because the mean of its divisors is an integer number (78101087222592).

Almost surely, 2^{312404303404213} is an apocalyptic number.

It is an amenable number.

312404303404213 is a deficient number, since it is larger than the sum of its proper divisors (45486155).

312404303404213 is an equidigital number, since it uses as much as digits as its factorization.

312404303404213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45486154.

The product of its (nonzero) digits is 82944, while the sum is 34.

It can be divided in two parts, 31240430 and 3404213, that added together give a palindrome (34644643).

The spelling of 312404303404213 in words is "three hundred twelve trillion, four hundred four billion, three hundred three million, four hundred four thousand, two hundred thirteen".