23001231 has 16 divisors (see below), whose sum is σ = 33931008. Its totient is φ = 13742400.

The previous prime is 23001227. The next prime is 23001233. The reversal of 23001231 is 13210032.

It is a happy number.

It is not a de Polignac number, because 23001231 - 2² = 23001227 is a prime.

It is a super-2 number, since 2×23001231² = 1058113255030722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23001233) 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, 2566 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (2120688).

Almost surely, 2^23001231 is an apocalyptic number.

23001231 is a deficient number, since it is larger than the sum of its proper divisors (10929777).

23001231 is a wasteful number, since it uses less digits than its factorization.

23001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9902.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 23001231 is about 4795.9598622174. The cubic root of 23001231 is about 284.3917715182.

Adding to 23001231 its reverse (13210032), we get a palindrome (36211263).

It can be divided in two parts, 23001 and 231, that added together give a palindrome (23232).

The spelling of 23001231 in words is "twenty-three million, one thousand, two hundred thirty-one".