312113210231 has 4 divisors (see below), whose sum is σ = 312116783352. Its totient is φ = 312109637112.

The previous prime is 312113210221. The next prime is 312113210261. The reversal of 312113210231 is 132012311213.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 312113210231 - 2¹⁸ = 312112948087 is a prime.

It is a super-2 number, since 2×312113210231² (a number of 24 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 (312113210221) 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, 1652165 + ... + 1831358.

It is an arithmetic number, because the mean of its divisors is an integer number (78029195838).

Almost surely, 2^312113210231 is an apocalyptic number.

312113210231 is a deficient number, since it is larger than the sum of its proper divisors (3573121).

312113210231 is an equidigital number, since it uses as much as digits as its factorization.

312113210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573120.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312113210231 its reverse (132012311213), we get a palindrome (444125521444).

The spelling of 312113210231 in words is "three hundred twelve billion, one hundred thirteen million, two hundred ten thousand, two hundred thirty-one".