23497919 has 4 divisors (see below), whose sum is σ = 23600760. Its totient is φ = 23395080.

The previous prime is 23497891. The next prime is 23497933. The reversal of 23497919 is 91979432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23497919 is a prime.

It is a super-2 number, since 2×23497919² = 1104304394661122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23497919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23497619) 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, 51077 + ... + 51534.

It is an arithmetic number, because the mean of its divisors is an integer number (5900190).

Almost surely, 2^23497919 is an apocalyptic number.

23497919 is a deficient number, since it is larger than the sum of its proper divisors (102841).

23497919 is a wasteful number, since it uses less digits than its factorization.

23497919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102840.

The product of its digits is 122472, while the sum is 44.

The square root of 23497919 is about 4847.4652139030. The cubic root of 23497919 is about 286.4242607058.

The spelling of 23497919 in words is "twenty-three million, four hundred ninety-seven thousand, nine hundred nineteen".