23130031 has 4 divisors (see below), whose sum is σ = 23239864. Its totient is φ = 23020200.

The previous prime is 23130007. The next prime is 23130067. The reversal of 23130031 is 13003132.

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

It is a cyclic number.

It is not a de Polignac number, because 23130031 - 2¹¹ = 23127983 is a prime.

It is a super-2 number, since 2×23130031² = 1069996668121922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23129993 and 23130020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130071) 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, 54600 + ... + 55021.

It is an arithmetic number, because the mean of its divisors is an integer number (5809966).

Almost surely, 2^23130031 is an apocalyptic number.

23130031 is a deficient number, since it is larger than the sum of its proper divisors (109833).

23130031 is a wasteful number, since it uses less digits than its factorization.

23130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109832.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 23130031 is about 4809.3690854415. The cubic root of 23130031 is about 284.9216199768.

Adding to 23130031 its reverse (13003132), we get a palindrome (36133163).

The spelling of 23130031 in words is "twenty-three million, one hundred thirty thousand, thirty-one".