23117487 has 16 divisors (see below), whose sum is σ = 31570560. Its totient is φ = 15041312.

The previous prime is 23117477. The next prime is 23117513. The reversal of 23117487 is 78471132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23117487 - 2¹⁰ = 23116463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117417) 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, 54964 + ... + 55382.

It is an arithmetic number, because the mean of its divisors is an integer number (1973160).

Almost surely, 2^23117487 is an apocalyptic number.

23117487 is a deficient number, since it is larger than the sum of its proper divisors (8453073).

23117487 is a wasteful number, since it uses less digits than its factorization.

23117487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822.

The product of its digits is 9408, while the sum is 33.

The square root of 23117487 is about 4808.0647874171. The cubic root of 23117487 is about 284.8701039326.

The spelling of 23117487 in words is "twenty-three million, one hundred seventeen thousand, four hundred eighty-seven".