23012131 has 4 divisors (see below), whose sum is σ = 23021992. Its totient is φ = 23002272.

The previous prime is 23012117. The next prime is 23012149. The reversal of 23012131 is 13121032.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23012131 - 2²³ = 14623523 is a prime.

It is a super-2 number, since 2×23012131² = 1059116346322322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23012191) 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 3 ways as a sum of consecutive naturals, for example, 760 + ... + 6826.

It is an arithmetic number, because the mean of its divisors is an integer number (5755498).

Almost surely, 2^23012131 is an apocalyptic number.

23012131 is a deficient number, since it is larger than the sum of its proper divisors (9861).

23012131 is an equidigital number, since it uses as much as digits as its factorization.

23012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 23012131 is about 4797.0961007676. The cubic root of 23012131 is about 284.4366876762.

Adding to 23012131 its reverse (13121032), we get a palindrome (36133163).

The spelling of 23012131 in words is "twenty-three million, twelve thousand, one hundred thirty-one".