23906531 has 8 divisors (see below), whose sum is σ = 26115264. Its totient is φ = 21703720.

The previous prime is 23906521. The next prime is 23906563. The reversal of 23906531 is 13560932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23906531 - 2¹⁰ = 23905507 is a prime.

It is a super-2 number, since 2×23906531² = 1143044448907922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23906494 and 23906503.

It is not an unprimeable number, because it can be changed into a prime (23906501) 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 7 ways as a sum of consecutive naturals, for example, 14936 + ... + 16458.

It is an arithmetic number, because the mean of its divisors is an integer number (3264408).

Almost surely, 2^23906531 is an apocalyptic number.

23906531 is a deficient number, since it is larger than the sum of its proper divisors (2208733).

23906531 is a wasteful number, since it uses less digits than its factorization.

23906531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 23906531 is about 4889.4305394391. The cubic root of 23906531 is about 288.0749668205.

The spelling of 23906531 in words is "twenty-three million, nine hundred six thousand, five hundred thirty-one".