2320743921 has 4 divisors (see below), whose sum is σ = 3094325232. Its totient is φ = 1547162612.

The previous prime is 2320743911. The next prime is 2320743977. The reversal of 2320743921 is 1293470232.

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 2320743921 - 2⁶ = 2320743857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2320743911) 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, 386790651 + ... + 386790656.

It is an arithmetic number, because the mean of its divisors is an integer number (773581308).

Almost surely, 2^2320743921 is an apocalyptic number.

It is an amenable number.

2320743921 is a deficient number, since it is larger than the sum of its proper divisors (773581311).

2320743921 is an equidigital number, since it uses as much as digits as its factorization.

2320743921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773581310.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 2320743921 is about 48174.1001057622. The cubic root of 2320743921 is about 1323.9626713782.

The spelling of 2320743921 in words is "two billion, three hundred twenty million, seven hundred forty-three thousand, nine hundred twenty-one".