23505131 has 8 divisors (see below), whose sum is σ = 25406640. Its totient is φ = 21616992.

The previous prime is 23505127. The next prime is 23505143. The reversal of 23505131 is 13150532.

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 23505131 - 2² = 23505127 is a prime.

It is a super-2 number, since 2×23505131² = 1104982366654322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23505431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (3175830).

Almost surely, 2^23505131 is an apocalyptic number.

23505131 is a deficient number, since it is larger than the sum of its proper divisors (1901509).

23505131 is a wasteful number, since it uses less digits than its factorization.

23505131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6685.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 23505131 is about 4848.2090507733. The cubic root of 23505131 is about 286.4535608958.

Adding to 23505131 its reverse (13150532), we get a palindrome (36655663).

The spelling of 23505131 in words is "twenty-three million, five hundred five thousand, one hundred thirty-one".