23019797 has 2 divisors, whose sum is σ = 23019798. Its totient is φ = 23019796.

The previous prime is 23019791. The next prime is 23019817. The reversal of 23019797 is 79791032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21613201 + 1406596 = 4649^2 + 1186^2 .

It is a cyclic number.

It is not a de Polignac number, because 23019797 - 2¹² = 23015701 is a prime.

It is a super-2 number, since 2×23019797² = 1059822107842418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23019797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23019791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11509898 + 11509899.

It is an arithmetic number, because the mean of its divisors is an integer number (11509899).

Almost surely, 2^23019797 is an apocalyptic number.

It is an amenable number.

23019797 is a deficient number, since it is larger than the sum of its proper divisors (1).

23019797 is an equidigital number, since it uses as much as digits as its factorization.

23019797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 23019797 is about 4797.8950592942. The cubic root of 23019797 is about 284.4682688389.

The spelling of 23019797 in words is "twenty-three million, nineteen thousand, seven hundred ninety-seven".