23117523 has 16 divisors (see below), whose sum is σ = 36212736. Its totient is φ = 12932640.

The previous prime is 23117513. The next prime is 23117527. The reversal of 23117523 is 32571132.

It is not a de Polignac number, because 23117523 - 2⁶ = 23117459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23117493 and 23117502.

It is not an unprimeable number, because it can be changed into a prime (23117527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26515 + ... + 27372.

It is an arithmetic number, because the mean of its divisors is an integer number (2263296).

Almost surely, 2^23117523 is an apocalyptic number.

23117523 is a deficient number, since it is larger than the sum of its proper divisors (13095213).

23117523 is a wasteful number, since it uses less digits than its factorization.

23117523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53914.

The product of its digits is 1260, while the sum is 24.

The square root of 23117523 is about 4808.0685311256. The cubic root of 23117523 is about 284.8702518051.

Adding to 23117523 its reverse (32571132), we get a palindrome (55688655).

The spelling of 23117523 in words is "twenty-three million, one hundred seventeen thousand, five hundred twenty-three".