23115975 has 12 divisors (see below), whose sum is σ = 38218536. Its totient is φ = 12328480.

The previous prime is 23115949. The next prime is 23115991. The reversal of 23115975 is 57951132.

It is not a de Polignac number, because 23115975 - 2¹¹ = 23113927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154032 + ... + 154181.

It is an arithmetic number, because the mean of its divisors is an integer number (3184878).

Almost surely, 2^23115975 is an apocalyptic number.

23115975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23115975 is a deficient number, since it is larger than the sum of its proper divisors (15102561).

23115975 is a wasteful number, since it uses less digits than its factorization.

23115975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308226 (or 308221 counting only the distinct ones).

The product of its digits is 9450, while the sum is 33.

The square root of 23115975 is about 4807.9075490280. The cubic root of 23115975 is about 284.8638931511.

It can be divided in two parts, 23115 and 975, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 23115975 in words is "twenty-three million, one hundred fifteen thousand, nine hundred seventy-five".