312323233021 has 4 divisors (see below), whose sum is σ = 317616847200. Its totient is φ = 307029618844.

The previous prime is 312323232961. The next prime is 312323233039. The reversal of 312323233021 is 120332323213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312323233021 - 2⁹ = 312323232509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312323233051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2646807001 + ... + 2646807118.

It is an arithmetic number, because the mean of its divisors is an integer number (79404211800).

Almost surely, 2^312323233021 is an apocalyptic number.

It is an amenable number.

312323233021 is a deficient number, since it is larger than the sum of its proper divisors (5293614179).

312323233021 is an equidigital number, since it uses as much as digits as its factorization.

312323233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5293614178.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 312323233021 its reverse (120332323213), we get a palindrome (432655556234).

The spelling of 312323233021 in words is "three hundred twelve billion, three hundred twenty-three million, two hundred thirty-three thousand, twenty-one".