23986513 has 2 divisors, whose sum is σ = 23986514. Its totient is φ = 23986512.

The previous prime is 23986499. The next prime is 23986519. The reversal of 23986513 is 31568932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19775809 + 4210704 = 4447^2 + 2052^2 .

It is a cyclic number.

It is not a de Polignac number, because 23986513 - 2¹⁷ = 23855441 is a prime.

It is not a weakly prime, because it can be changed into another prime (23986519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11993256 + 11993257.

It is an arithmetic number, because the mean of its divisors is an integer number (11993257).

Almost surely, 2^23986513 is an apocalyptic number.

It is an amenable number.

23986513 is a deficient number, since it is larger than the sum of its proper divisors (1).

23986513 is an equidigital number, since it uses as much as digits as its factorization.

23986513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 23986513 is about 4897.6027809531. The cubic root of 23986513 is about 288.3958716594.

It can be divided in two parts, 2398 and 6513, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 23986513 in words is "twenty-three million, nine hundred eighty-six thousand, five hundred thirteen".