312331133213 has 4 divisors (see below), whose sum is σ = 340724872608. Its totient is φ = 283937393820.

The previous prime is 312331133209. The next prime is 312331133237.

312331133213 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 312331133213 - 2² = 312331133209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312331133203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14196869681 + ... + 14196869702.

It is an arithmetic number, because the mean of its divisors is an integer number (85181218152).

Almost surely, 2^312331133213 is an apocalyptic number.

It is an amenable number.

312331133213 is a deficient number, since it is larger than the sum of its proper divisors (28393739395).

312331133213 is a wasteful number, since it uses less digits than its factorization.

312331133213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28393739394.

The product of its digits is 2916, while the sum is 26.

It can be divided in two parts, 312331 and 133213, that added together give a palindrome (445544).

The spelling of 312331133213 in words is "three hundred twelve billion, three hundred thirty-one million, one hundred thirty-three thousand, two hundred thirteen".