2312133331 has 4 divisors (see below), whose sum is σ = 2448141192. Its totient is φ = 2176125472.

The previous prime is 2312133323. The next prime is 2312133379. The reversal of 2312133331 is 1333312132.

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 2312133331 - 2³ = 2312133323 is a prime.

It is a super-2 number, since 2×2312133331² = 10691921080642311122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312133301) 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, 68003905 + ... + 68003938.

It is an arithmetic number, because the mean of its divisors is an integer number (612035298).

Almost surely, 2^2312133331 is an apocalyptic number.

2312133331 is a deficient number, since it is larger than the sum of its proper divisors (136007861).

2312133331 is a wasteful number, since it uses less digits than its factorization.

2312133331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136007860.

The product of its digits is 972, while the sum is 22.

The square root of 2312133331 is about 48084.6475603180. The cubic root of 2312133331 is about 1322.3232217855.

Adding to 2312133331 its reverse (1333312132), we get a palindrome (3645445463).

The spelling of 2312133331 in words is "two billion, three hundred twelve million, one hundred thirty-three thousand, three hundred thirty-one".