312311101202311 has 4 divisors (see below), whose sum is σ = 328748527581400. Its totient is φ = 295873674823224.

The previous prime is 312311101202263. The next prime is 312311101202381. The reversal of 312311101202311 is 113202101113213.

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 312311101202311 - 2²³ = 312311092813703 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 (312311101202381) 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, 8218713189516 + ... + 8218713189553.

It is an arithmetic number, because the mean of its divisors is an integer number (82187131895350).

Almost surely, 2^{312311101202311} is an apocalyptic number.

312311101202311 is a deficient number, since it is larger than the sum of its proper divisors (16437426379089).

312311101202311 is a wasteful number, since it uses less digits than its factorization.

312311101202311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16437426379088.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 312311101202311 its reverse (113202101113213), we get a palindrome (425513202315524).

The spelling of 312311101202311 in words is "three hundred twelve trillion, three hundred eleven billion, one hundred one million, two hundred two thousand, three hundred eleven".