23431061 has 2 divisors, whose sum is σ = 23431062. Its totient is φ = 23431060.

The previous prime is 23431021. The next prime is 23431063. The reversal of 23431061 is 16013432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22800625 + 630436 = 4775^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 23431061 - 2¹⁰ = 23430037 is a prime.

Together with 23431063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23431063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11715530 + 11715531.

It is an arithmetic number, because the mean of its divisors is an integer number (11715531).

Almost surely, 2^23431061 is an apocalyptic number.

It is an amenable number.

23431061 is a deficient number, since it is larger than the sum of its proper divisors (1).

23431061 is an equidigital number, since it uses as much as digits as its factorization.

23431061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 23431061 is about 4840.5641200174. The cubic root of 23431061 is about 286.1523508957.

Adding to 23431061 its reverse (16013432), we get a palindrome (39444493).

The spelling of 23431061 in words is "twenty-three million, four hundred thirty-one thousand, sixty-one".