312111210213311 has 4 divisors (see below), whose sum is σ = 312112110879912. Its totient is φ = 312110309546712.

The previous prime is 312111210213269. The next prime is 312111210213329. The reversal of 312111210213311 is 113312012111213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312111210213311 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 (312111210213511) 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, 449813300 + ... + 450506633.

It is an arithmetic number, because the mean of its divisors is an integer number (78028027719978).

Almost surely, 2^{312111210213311} is an apocalyptic number.

312111210213311 is a deficient number, since it is larger than the sum of its proper divisors (900666601).

312111210213311 is an equidigital number, since it uses as much as digits as its factorization.

312111210213311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900666600.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 312111210213311 its reverse (113312012111213), we get a palindrome (425423222324524).

The spelling of 312111210213311 in words is "three hundred twelve trillion, one hundred eleven billion, two hundred ten million, two hundred thirteen thousand, three hundred eleven".