23311231 has 8 divisors (see below), whose sum is σ = 23652864. Its totient is φ = 22972320.

The previous prime is 23311219. The next prime is 23311237. The reversal of 23311231 is 13211332.

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 23311231 - 2⁹ = 23310719 is a prime.

It is a super-2 number, since 2×23311231² = 1086826981470722, 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 (23311237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21441 + ... + 22501.

It is an arithmetic number, because the mean of its divisors is an integer number (2956608).

Almost surely, 2^23311231 is an apocalyptic number.

23311231 is a deficient number, since it is larger than the sum of its proper divisors (341633).

23311231 is a wasteful number, since it uses less digits than its factorization.

23311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361.

The product of its digits is 108, while the sum is 16.

The square root of 23311231 is about 4828.1705645099. The cubic root of 23311231 is about 285.6637081067.

Adding to 23311231 its reverse (13211332), we get a palindrome (36522563).

The spelling of 23311231 in words is "twenty-three million, three hundred eleven thousand, two hundred thirty-one".