23751231 has 12 divisors (see below), whose sum is σ = 36838872. Its totient is φ = 13572048.

The previous prime is 23751229. The next prime is 23751257. The reversal of 23751231 is 13215732.

It is not a de Polignac number, because 23751231 - 2¹ = 23751229 is a prime.

It is a super-2 number, since 2×23751231² = 1128241948030722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23751731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80640 + ... + 80933.

It is an arithmetic number, because the mean of its divisors is an integer number (3069906).

Almost surely, 2^23751231 is an apocalyptic number.

23751231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23751231 is a deficient number, since it is larger than the sum of its proper divisors (13087641).

23751231 is a wasteful number, since it uses less digits than its factorization.

23751231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161590 (or 161583 counting only the distinct ones).

The product of its digits is 1260, while the sum is 24.

The square root of 23751231 is about 4873.5234687031. The cubic root of 23751231 is about 287.4498201017.

Adding to 23751231 its reverse (13215732), we get a palindrome (36966963).

The spelling of 23751231 in words is "twenty-three million, seven hundred fifty-one thousand, two hundred thirty-one".