2313000021 has 4 divisors (see below), whose sum is σ = 3084000032. Its totient is φ = 1542000012.

The previous prime is 2313000007. The next prime is 2313000047. The reversal of 2313000021 is 1200003132.

It is a happy number.

2313000021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 2313000021 - 2⁹ = 2312999509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2312999970 and 2313000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2313000421) 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, 385500001 + ... + 385500006.

It is an arithmetic number, because the mean of its divisors is an integer number (771000008).

Almost surely, 2^2313000021 is an apocalyptic number.

It is an amenable number.

2313000021 is a deficient number, since it is larger than the sum of its proper divisors (771000011).

2313000021 is an equidigital number, since it uses as much as digits as its factorization.

2313000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771000010.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2313000021 is about 48093.6588439682. The cubic root of 2313000021 is about 1322.4884229198.

Adding to 2313000021 its reverse (1200003132), we get a palindrome (3513003153).

The spelling of 2313000021 in words is "two billion, three hundred thirteen million, twenty-one", and thus it is an aban number.