23427013 has 2 divisors, whose sum is σ = 23427014. Its totient is φ = 23427012.

The previous prime is 23426987. The next prime is 23427017. The reversal of 23427013 is 31072432.

23427013 = 3422² + 3423².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11716929 + 11710084 = 3423^2 + 3422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23427013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23427017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11713506 + 11713507.

It is an arithmetic number, because the mean of its divisors is an integer number (11713507).

Almost surely, 2^23427013 is an apocalyptic number.

23427013 is the 3423-rd centered square number.

It is an amenable number.

23427013 is a deficient number, since it is larger than the sum of its proper divisors (1).

23427013 is an equidigital number, since it uses as much as digits as its factorization.

23427013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 23427013 is about 4840.1459688733. The cubic root of 23427013 is about 286.1358711835.

Adding to 23427013 its reverse (31072432), we get a palindrome (54499445).

The spelling of 23427013 in words is "twenty-three million, four hundred twenty-seven thousand, thirteen".