23231131 has 8 divisors (see below), whose sum is σ = 28963584. Its totient is φ = 18102120.

The previous prime is 23231123. The next prime is 23231141. The reversal of 23231131 is 13113232.

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 23231131 - 2³ = 23231123 is a prime.

It is a super-2 number, since 2×23231131² = 1079370895078322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23231141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150775 + ... + 150928.

It is an arithmetic number, because the mean of its divisors is an integer number (3620448).

Almost surely, 2^23231131 is an apocalyptic number.

23231131 is a deficient number, since it is larger than the sum of its proper divisors (5732453).

23231131 is a wasteful number, since it uses less digits than its factorization.

23231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301721.

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

The square root of 23231131 is about 4819.8683591982. The cubic root of 23231131 is about 285.3361418055.

Adding to 23231131 its reverse (13113232), we get a palindrome (36344363).

The spelling of 23231131 in words is "twenty-three million, two hundred thirty-one thousand, one hundred thirty-one".