2331111113 has 4 divisors (see below), whose sum is σ = 2335420548. Its totient is φ = 2326801680.

The previous prime is 2331111103. The next prime is 2331111119. The reversal of 2331111113 is 3111111332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1532879104 + 798232009 = 39152^2 + 28253^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331111113 - 2⁶ = 2331111049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2331111091 and 2331111100.

It is not an unprimeable number, because it can be changed into a prime (2331111119) 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, 2153906 + ... + 2154987.

It is an arithmetic number, because the mean of its divisors is an integer number (583855137).

Almost surely, 2^2331111113 is an apocalyptic number.

It is an amenable number.

2331111113 is a deficient number, since it is larger than the sum of its proper divisors (4309435).

2331111113 is an equidigital number, since it uses as much as digits as its factorization.

2331111113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309434.

The product of its digits is 54, while the sum is 17.

The square root of 2331111113 is about 48281.5815088943. The cubic root of 2331111113 is about 1325.9312049935.

Adding to 2331111113 its reverse (3111111332), we get a palindrome (5442222445).

The spelling of 2331111113 in words is "two billion, three hundred thirty-one million, one hundred eleven thousand, one hundred thirteen".