23000517 has 10 divisors (see below), whose sum is σ = 34358918. Its totient is φ = 15333624.

The previous prime is 23000513. The next prime is 23000533. The reversal of 23000517 is 71500032.

It can be written as a sum of positive squares in only one way, i.e., 16695396 + 6305121 = 4086^2 + 2511^2 .

It is not a de Polignac number, because 23000517 - 2² = 23000513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23000517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23000513) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 141898 + ... + 142059.

Almost surely, 2^23000517 is an apocalyptic number.

23000517 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

23000517 is a deficient number, since it is larger than the sum of its proper divisors (11358401).

23000517 is an equidigital number, since it uses as much as digits as its factorization.

23000517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283969 (or 283960 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 23000517 is about 4795.8854239859. The cubic root of 23000517 is about 284.3888288087.

Adding to 23000517 its reverse (71500032), we get a palindrome (94500549).

The spelling of 23000517 in words is "twenty-three million, five hundred seventeen", and thus it is an aban number.