312431444134213 has 4 divisors (see below), whose sum is σ = 330809764377420. Its totient is φ = 294053123891008.

The previous prime is 312431444134193. The next prime is 312431444134223.

312431444134213 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 173207656862244 + 139223787271969 = 13160838^2 + 11799313^2 .

It is a de Polignac number, because none of the positive numbers 2^k-312431444134213 is a prime.

It is a super-2 number, since 2×312431444134213² (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 (312431444134223) 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, 9189160121578 + ... + 9189160121611.

It is an arithmetic number, because the mean of its divisors is an integer number (82702441094355).

Almost surely, 2^{312431444134213} is an apocalyptic number.

It is an amenable number.

312431444134213 is a deficient number, since it is larger than the sum of its proper divisors (18378320243207).

312431444134213 is a wasteful number, since it uses less digits than its factorization.

312431444134213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18378320243206.

The product of its digits is 331776, while the sum is 40.

The spelling of 312431444134213 in words is "three hundred twelve trillion, four hundred thirty-one billion, four hundred forty-four million, one hundred thirty-four thousand, two hundred thirteen".