312442203213 has 48 divisors (see below), whose sum is σ = 523920407296. Its totient is φ = 175729824000.

The previous prime is 312442203209. The next prime is 312442203221. The reversal of 312442203213 is 312302244213.

312442203213 is a `hidden beast` number, since 3 + 1 + 2 + 442 + 2 + 0 + 3 + 213 = 666.

It is not a de Polignac number, because 312442203213 - 2² = 312442203209 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 (312442203413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2169963 + ... + 2309463.

Almost surely, 2^312442203213 is an apocalyptic number.

It is an amenable number.

312442203213 is a deficient number, since it is larger than the sum of its proper divisors (211478204083).

312442203213 is a wasteful number, since it uses less digits than its factorization.

312442203213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140074 (or 140071 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 312442203213 its reverse (312302244213), we get a palindrome (624744447426).

The spelling of 312442203213 in words is "three hundred twelve billion, four hundred forty-two million, two hundred three thousand, two hundred thirteen".