2331312011 has 4 divisors (see below), whose sum is σ = 2664356592. Its totient is φ = 1998267432.

The previous prime is 2331311981. The next prime is 2331312043. The reversal of 2331312011 is 1102131332.

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

It is not a de Polignac number, because 2331312011 - 2¹⁴ = 2331295627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2331312211) 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, 166522280 + ... + 166522293.

It is an arithmetic number, because the mean of its divisors is an integer number (666089148).

Almost surely, 2^2331312011 is an apocalyptic number.

2331312011 is a deficient number, since it is larger than the sum of its proper divisors (333044581).

2331312011 is an equidigital number, since it uses as much as digits as its factorization.

2331312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333044580.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2331312011 is about 48283.6619468739. The cubic root of 2331312011 is about 1325.9692940224.

Adding to 2331312011 its reverse (1102131332), we get a palindrome (3433443343).

The spelling of 2331312011 in words is "two billion, three hundred thirty-one million, three hundred twelve thousand, eleven".