23961013 has 2 divisors, whose sum is σ = 23961014. Its totient is φ = 23961012.

The previous prime is 23961011. The next prime is 23961031. The reversal of 23961013 is 31016932.

Together with next prime (23961031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20052484 + 3908529 = 4478^2 + 1977^2 .

It is a cyclic number.

It is not a de Polignac number, because 23961013 - 2¹ = 23961011 is a prime.

Together with 23961011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23961011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11980506 + 11980507.

It is an arithmetic number, because the mean of its divisors is an integer number (11980507).

Almost surely, 2^23961013 is an apocalyptic number.

It is an amenable number.

23961013 is a deficient number, since it is larger than the sum of its proper divisors (1).

23961013 is an equidigital number, since it uses as much as digits as its factorization.

23961013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 23961013 is about 4894.9987742593. The cubic root of 23961013 is about 288.2936377873.

Adding to 23961013 its reverse (31016932), we get a palindrome (54977945).

The spelling of 23961013 in words is "twenty-three million, nine hundred sixty-one thousand, thirteen".