231313311311 has 4 divisors (see below), whose sum is σ = 232273117824. Its totient is φ = 230353504800.

The previous prime is 231313311263. The next prime is 231313311331. The reversal of 231313311311 is 113113313132.

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 231313311311 - 2³⁰ = 230239569487 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 (231313311331) 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, 479902895 + ... + 479903376.

It is an arithmetic number, because the mean of its divisors is an integer number (58068279456).

Almost surely, 2^231313311311 is an apocalyptic number.

231313311311 is a deficient number, since it is larger than the sum of its proper divisors (959806513).

231313311311 is an equidigital number, since it uses as much as digits as its factorization.

231313311311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959806512.

The product of its digits is 486, while the sum is 23.

Adding to 231313311311 its reverse (113113313132), we get a palindrome (344426624443).

The spelling of 231313311311 in words is "two hundred thirty-one billion, three hundred thirteen million, three hundred eleven thousand, three hundred eleven".