23321819 has 2 divisors, whose sum is σ = 23321820. Its totient is φ = 23321818.

The previous prime is 23321791. The next prime is 23321833. The reversal of 23321819 is 91812332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23321819 - 2¹⁶ = 23256283 is a prime.

It is a super-2 number, since 2×23321819² = 1087814482937522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23321791 and 23321800.

It is not a weakly prime, because it can be changed into another prime (23321119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660909 + 11660910.

It is an arithmetic number, because the mean of its divisors is an integer number (11660910).

Almost surely, 2^23321819 is an apocalyptic number.

23321819 is a deficient number, since it is larger than the sum of its proper divisors (1).

23321819 is an equidigital number, since it uses as much as digits as its factorization.

23321819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 23321819 is about 4829.2669215938. The cubic root of 23321819 is about 285.7069512046.

The spelling of 23321819 in words is "twenty-three million, three hundred twenty-one thousand, eight hundred nineteen".