23523131 has 2 divisors, whose sum is σ = 23523132. Its totient is φ = 23523130.

The previous prime is 23523103. The next prime is 23523139. The reversal of 23523131 is 13132532.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23523131 is a prime.

It is a super-2 number, since 2×23523131² = 1106675384086322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23523139) 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 as a sum of consecutive naturals, namely, 11761565 + 11761566.

It is an arithmetic number, because the mean of its divisors is an integer number (11761566).

Almost surely, 2^23523131 is an apocalyptic number.

23523131 is a deficient number, since it is larger than the sum of its proper divisors (1).

23523131 is an equidigital number, since it uses as much as digits as its factorization.

23523131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 20.

The square root of 23523131 is about 4850.0650511101. The cubic root of 23523131 is about 286.5266633526.

Adding to 23523131 its reverse (13132532), we get a palindrome (36655663).

The spelling of 23523131 in words is "twenty-three million, five hundred twenty-three thousand, one hundred thirty-one".