2320111231 has 4 divisors (see below), whose sum is σ = 2320355464. Its totient is φ = 2319867000.

The previous prime is 2320111229. The next prime is 2320111237. The reversal of 2320111231 is 1321110232.

2320111231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2320111231 - 2¹ = 2320111229 is a prime.

It is a super-2 number, since 2×2320111231² = 10765832248424670722, which 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 (2320111237) 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, 107265 + ... + 127066.

It is an arithmetic number, because the mean of its divisors is an integer number (580088866).

Almost surely, 2^2320111231 is an apocalyptic number.

2320111231 is a deficient number, since it is larger than the sum of its proper divisors (244233).

2320111231 is an equidigital number, since it uses as much as digits as its factorization.

2320111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244232.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2320111231 is about 48167.5329553009. The cubic root of 2320111231 is about 1323.8423458698.

Adding to 2320111231 its reverse (1321110232), we get a palindrome (3641221463).

Subtracting from 2320111231 its reverse (1321110232), we obtain a palindrome (999000999).

The spelling of 2320111231 in words is "two billion, three hundred twenty million, one hundred eleven thousand, two hundred thirty-one".