23081519 has 2 divisors, whose sum is σ = 23081520. Its totient is φ = 23081518.

The previous prime is 23081491. The next prime is 23081521. The reversal of 23081519 is 91518032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23081519 - 2⁸ = 23081263 is a prime.

It is a super-2 number, since 2×23081519² = 1065513038694722, which contains 22 as substring.

Together with 23081521, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1453079 and since 23081519 and 1453079 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 23081491 and 23081500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23081549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11540759 + 11540760.

It is an arithmetic number, because the mean of its divisors is an integer number (11540760).

Almost surely, 2^23081519 is an apocalyptic number.

23081519 is a deficient number, since it is larger than the sum of its proper divisors (1).

23081519 is an equidigital number, since it uses as much as digits as its factorization.

23081519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 23081519 is about 4804.3229491782. The cubic root of 23081519 is about 284.7222861580.

The spelling of 23081519 in words is "twenty-three million, eighty-one thousand, five hundred nineteen".