23380531 has 2 divisors, whose sum is σ = 23380532. Its totient is φ = 23380530.

The previous prime is 23380529. The next prime is 23380543. The reversal of 23380531 is 13508332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23380531 - 2¹ = 23380529 is a prime.

It is a super-3 number, since 3×23380531³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 23380529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23380496 and 23380505.

It is not a weakly prime, because it can be changed into another prime (23380561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11690265 + 11690266.

It is an arithmetic number, because the mean of its divisors is an integer number (11690266).

Almost surely, 2^23380531 is an apocalyptic number.

23380531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23380531 is an equidigital number, since it uses as much as digits as its factorization.

23380531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 23380531 is about 4835.3418700233. The cubic root of 23380531 is about 285.9465032709.

Adding to 23380531 its reverse (13508332), we get a palindrome (36888863).

The spelling of 23380531 in words is "twenty-three million, three hundred eighty thousand, five hundred thirty-one".