23015789 has 2 divisors, whose sum is σ = 23015790. Its totient is φ = 23015788.

The previous prime is 23015777. The next prime is 23015791. The reversal of 23015789 is 98751032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15342889 + 7672900 = 3917^2 + 2770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23015789 is a prime.

Together with 23015791, 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 (23015749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11507894 + 11507895.

It is an arithmetic number, because the mean of its divisors is an integer number (11507895).

Almost surely, 2^23015789 is an apocalyptic number.

It is an amenable number.

23015789 is a deficient number, since it is larger than the sum of its proper divisors (1).

23015789 is an equidigital number, since it uses as much as digits as its factorization.

23015789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 23015789 is about 4797.4773579455. The cubic root of 23015789 is about 284.4517581952.

The spelling of 23015789 in words is "twenty-three million, fifteen thousand, seven hundred eighty-nine".