2312323021 has 4 divisors (see below), whose sum is σ = 2315133472. Its totient is φ = 2309512572.

The previous prime is 2312323019. The next prime is 2312323031. The reversal of 2312323021 is 1203232132.

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 2312323021 - 2¹ = 2312323019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2312323021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312323001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403991 + ... + 1405636.

It is an arithmetic number, because the mean of its divisors is an integer number (578783368).

Almost surely, 2^2312323021 is an apocalyptic number.

It is an amenable number.

2312323021 is a deficient number, since it is larger than the sum of its proper divisors (2810451).

2312323021 is an equidigital number, since it uses as much as digits as its factorization.

2312323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810450.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2312323021 is about 48086.6199789505. The cubic root of 2312323021 is about 1322.3593824212.

Adding to 2312323021 its reverse (1203232132), we get a palindrome (3515555153).

The spelling of 2312323021 in words is "two billion, three hundred twelve million, three hundred twenty-three thousand, twenty-one".