23820131 has 2 divisors, whose sum is σ = 23820132. Its totient is φ = 23820130.

The previous prime is 23820127. The next prime is 23820133. The reversal of 23820131 is 13102832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23820131 - 2² = 23820127 is a prime.

It is a super-2 number, since 2×23820131² = 1134797281714322, which contains 22 as substring.

Together with 23820133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23820133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11910065 + 11910066.

It is an arithmetic number, because the mean of its divisors is an integer number (11910066).

Almost surely, 2^23820131 is an apocalyptic number.

23820131 is a deficient number, since it is larger than the sum of its proper divisors (1).

23820131 is an equidigital number, since it uses as much as digits as its factorization.

23820131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 23820131 is about 4880.5871572998. The cubic root of 23820131 is about 287.7275063731.

Adding to 23820131 its reverse (13102832), we get a palindrome (36922963).

The spelling of 23820131 in words is "twenty-three million, eight hundred twenty thousand, one hundred thirty-one".