23015519 has 2 divisors, whose sum is σ = 23015520. Its totient is φ = 23015518.

The previous prime is 23015497. The next prime is 23015537. The reversal of 23015519 is 91551032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23015519 is a prime.

It is a super-2 number, since 2×23015519² = 1059428229678722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23015539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11507759 + 11507760.

It is an arithmetic number, because the mean of its divisors is an integer number (11507760).

Almost surely, 2^23015519 is an apocalyptic number.

23015519 is a deficient number, since it is larger than the sum of its proper divisors (1).

23015519 is an equidigital number, since it uses as much as digits as its factorization.

23015519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 23015519 is about 4797.4492180741. The cubic root of 23015519 is about 284.4506458824.

The spelling of 23015519 in words is "twenty-three million, fifteen thousand, five hundred nineteen".