23321801 has 4 divisors (see below), whose sum is σ = 23332500. Its totient is φ = 23311104.

The previous prime is 23321791. The next prime is 23321819. The reversal of 23321801 is 10812332.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1690000 + 21631801 = 1300^2 + 4651^2 .

It is a cyclic number.

It is not a de Polignac number, because 23321801 - 2⁶ = 23321737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23321101) 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, 776 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (5833125).

Almost surely, 2^23321801 is an apocalyptic number.

It is an amenable number.

23321801 is a deficient number, since it is larger than the sum of its proper divisors (10699).

23321801 is an equidigital number, since it uses as much as digits as its factorization.

23321801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10698.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 23321801 is about 4829.2650579565. The cubic root of 23321801 is about 285.7068777008.

The spelling of 23321801 in words is "twenty-three million, three hundred twenty-one thousand, eight hundred one".