23320031 has 12 divisors (see below), whose sum is σ = 28064520. Its totient is φ = 19298160.

The previous prime is 23320019. The next prime is 23320057. The reversal of 23320031 is 13002332.

It is not a de Polignac number, because 23320031 - 2¹⁰ = 23319007 is a prime.

It is a super-2 number, since 2×23320031² = 1087647691681922, 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 = 23319988 and 23320015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23320831) 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 11 ways as a sum of consecutive naturals, for example, 6785 + ... + 9626.

It is an arithmetic number, because the mean of its divisors is an integer number (2338710).

Almost surely, 2^23320031 is an apocalyptic number.

23320031 is a deficient number, since it is larger than the sum of its proper divisors (4744489).

23320031 is a wasteful number, since it uses less digits than its factorization.

23320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16454 (or 16447 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 23320031 is about 4829.0817967808. The cubic root of 23320031 is about 285.6996496431.

Adding to 23320031 its reverse (13002332), we get a palindrome (36322363).

The spelling of 23320031 in words is "twenty-three million, three hundred twenty thousand, thirty-one".