2313111211231 has 4 divisors (see below), whose sum is σ = 2313141127264. Its totient is φ = 2313081295200.

The previous prime is 2313111211223. The next prime is 2313111211237. The reversal of 2313111211231 is 1321121113132.

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 2313111211231 - 2³ = 2313111211223 is a prime.

It is a super-2 number, since 2×2313111211231² (a number of 26 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 (2313111211237) 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, 14841735 + ... + 14996776.

It is an arithmetic number, because the mean of its divisors is an integer number (578285281816).

Almost surely, 2^{2313111211231} is an apocalyptic number.

2313111211231 is a deficient number, since it is larger than the sum of its proper divisors (29916033).

2313111211231 is an equidigital number, since it uses as much as digits as its factorization.

2313111211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29916032.

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

Adding to 2313111211231 its reverse (1321121113132), we get a palindrome (3634232324363).

The spelling of 2313111211231 in words is "two trillion, three hundred thirteen billion, one hundred eleven million, two hundred eleven thousand, two hundred thirty-one".