312212312311 has 4 divisors (see below), whose sum is σ = 320650482952. Its totient is φ = 303774141672.

The previous prime is 312212312309. The next prime is 312212312323. The reversal of 312212312311 is 113213212213.

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 312212312311 - 2¹ = 312212312309 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 (312212312371) 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, 4219085265 + ... + 4219085338.

It is an arithmetic number, because the mean of its divisors is an integer number (80162620738).

Almost surely, 2^312212312311 is an apocalyptic number.

312212312311 is a deficient number, since it is larger than the sum of its proper divisors (8438170641).

312212312311 is an equidigital number, since it uses as much as digits as its factorization.

312212312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8438170640.

The product of its digits is 432, while the sum is 22.

Adding to 312212312311 its reverse (113213212213), we get a palindrome (425425524524).

The spelling of 312212312311 in words is "three hundred twelve billion, two hundred twelve million, three hundred twelve thousand, three hundred eleven".