23000031 has 20 divisors (see below), whose sum is σ = 36381312. Its totient is φ = 14430528.

The previous prime is 23000027. The next prime is 23000059. The reversal of 23000031 is 13000032.

It is a happy number.

It is not a de Polignac number, because 23000031 - 2² = 23000027 is a prime.

It is a super-2 number, since 2×23000031² = 1058002852001922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 22999977 and 23000022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23000011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6975 + ... + 9728.

Almost surely, 2^23000031 is an apocalyptic number.

23000031 is a deficient number, since it is larger than the sum of its proper divisors (13381281).

23000031 is a wasteful number, since it uses less digits than its factorization.

23000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16732 (or 16723 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 23000031 is about 4795.8347552850. The cubic root of 23000031 is about 284.3868257530.

Adding to 23000031 its reverse (13000032), we get a palindrome (36000063).

Subtracting from 23000031 its reverse (13000032), we obtain a palindrome (9999999).

The spelling of 23000031 in words is "twenty-three million, thirty-one", and thus it is an aban number and an uban number.