23081819 has 2 divisors, whose sum is σ = 23081820. Its totient is φ = 23081818.

The previous prime is 23081791. The next prime is 23081831. The reversal of 23081819 is 91818032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23081819 is a prime.

It is a super-2 number, since 2×23081819² = 1065540736697522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23081519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11540909 + 11540910.

It is an arithmetic number, because the mean of its divisors is an integer number (11540910).

Almost surely, 2^23081819 is an apocalyptic number.

23081819 is a deficient number, since it is larger than the sum of its proper divisors (1).

23081819 is an equidigital number, since it uses as much as digits as its factorization.

23081819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 23081819 is about 4804.3541709578. The cubic root of 23081819 is about 284.7235197036.

The spelling of 23081819 in words is "twenty-three million, eighty-one thousand, eight hundred nineteen".