23102513 has 4 divisors (see below), whose sum is σ = 26402880. Its totient is φ = 19802148.

The previous prime is 23102509. The next prime is 23102539. The reversal of 23102513 is 31520132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23102513 - 2² = 23102509 is a prime.

It is a super-2 number, since 2×23102513² = 1067452213830338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23102491 and 23102500.

It is not an unprimeable number, because it can be changed into a prime (23102543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1650173 + ... + 1650186.

It is an arithmetic number, because the mean of its divisors is an integer number (6600720).

Almost surely, 2^23102513 is an apocalyptic number.

It is an amenable number.

23102513 is a deficient number, since it is larger than the sum of its proper divisors (3300367).

23102513 is an equidigital number, since it uses as much as digits as its factorization.

23102513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300366.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 23102513 is about 4806.5073598196. The cubic root of 23102513 is about 284.8085838913.

Adding to 23102513 its reverse (31520132), we get a palindrome (54622645).

It can be divided in two parts, 2 and 3102513, that multiplied together give a palindrome (6205026).

The spelling of 23102513 in words is "twenty-three million, one hundred two thousand, five hundred thirteen".