2323921 has 4 divisors (see below), whose sum is σ = 2380644. Its totient is φ = 2267200.

The previous prime is 2323907. The next prime is 2323939. The reversal of 2323921 is 1293232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 541696 + 1782225 = 736^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2323921 - 2⁵ = 2323889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2323892 and 2323901.

It is not an unprimeable number, because it can be changed into a prime (2323021) 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, 28300 + ... + 28381.

It is an arithmetic number, because the mean of its divisors is an integer number (595161).

2^2323921 is an apocalyptic number.

It is an amenable number.

2323921 is a deficient number, since it is larger than the sum of its proper divisors (56723).

2323921 is an equidigital number, since it uses as much as digits as its factorization.

2323921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56722.

The product of its digits is 648, while the sum is 22.

The square root of 2323921 is about 1524.4412090993. The cubic root of 2323921 is about 132.4566560493.

The spelling of 2323921 in words is "two million, three hundred twenty-three thousand, nine hundred twenty-one".