23012231 has 4 divisors (see below), whose sum is σ = 25104264. Its totient is φ = 20920200.

The previous prime is 23012221. The next prime is 23012233. The reversal of 23012231 is 13221032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23012231 is a prime.

It is a super-2 number, since 2×23012231² = 1059125551194722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046000 + ... + 1046021.

It is an arithmetic number, because the mean of its divisors is an integer number (6276066).

Almost surely, 2^23012231 is an apocalyptic number.

23012231 is a deficient number, since it is larger than the sum of its proper divisors (2092033).

23012231 is a wasteful number, since it uses less digits than its factorization.

23012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092032.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23012231 is about 4797.1065237287. The cubic root of 23012231 is about 284.4370996853.

Adding to 23012231 its reverse (13221032), we get a palindrome (36233263).

The spelling of 23012231 in words is "twenty-three million, twelve thousand, two hundred thirty-one".