23051513 has 2 divisors, whose sum is σ = 23051514. Its totient is φ = 23051512.

The previous prime is 23051459. The next prime is 23051519. The reversal of 23051513 is 31515032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18774889 + 4276624 = 4333^2 + 2068^2 .

It is a cyclic number.

It is not a de Polignac number, because 23051513 - 2¹² = 23047417 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23051519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11525756 + 11525757.

It is an arithmetic number, because the mean of its divisors is an integer number (11525757).

Almost surely, 2^23051513 is an apocalyptic number.

It is an amenable number.

23051513 is a deficient number, since it is larger than the sum of its proper divisors (1).

23051513 is an equidigital number, since it uses as much as digits as its factorization.

23051513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 23051513 is about 4801.1991210530. The cubic root of 23051513 is about 284.5988528934.

Adding to 23051513 its reverse (31515032), we get a palindrome (54566545).

The spelling of 23051513 in words is "twenty-three million, fifty-one thousand, five hundred thirteen".