23117575 has 24 divisors (see below), whose sum is σ = 31279248. Its totient is φ = 16846080.

The previous prime is 23117573. The next prime is 23117581. The reversal of 23117575 is 57571132.

It is not a de Polignac number, because 23117575 - 2¹ = 23117573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26547 + ... + 27403.

It is an arithmetic number, because the mean of its divisors is an integer number (1303302).

Almost surely, 2^23117575 is an apocalyptic number.

23117575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23117575 is a deficient number, since it is larger than the sum of its proper divisors (8161673).

23117575 is a wasteful number, since it uses less digits than its factorization.

23117575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 958 counting only the distinct ones).

The product of its digits is 7350, while the sum is 31.

The square root of 23117575 is about 4808.0739386994. The cubic root of 23117575 is about 284.8704653984.

It can be divided in two parts, 231 and 17575, that multiplied together give a triangular number (4059825 = T₂₈₄₉).

The spelling of 23117575 in words is "twenty-three million, one hundred seventeen thousand, five hundred seventy-five".