13000023 has 6 divisors (see below), whose sum is σ = 18777824. Its totient is φ = 8666676.

The previous prime is 12999997. The next prime is 13000027. The reversal of 13000023 is 32000031.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-13000023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1444447 = 13000023 / (1 + 3 + 0 + 0 + 0 + 0 + 2 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12999969 and 13000014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 722215 + ... + 722232.

Almost surely, 2^13000023 is an apocalyptic number.

13000023 is a deficient number, since it is larger than the sum of its proper divisors (5777801).

13000023 is a wasteful number, since it uses less digits than its factorization.

13000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444453 (or 1444450 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 13000023 is about 3605.5544649887. The cubic root of 13000023 is about 235.1336074404.

Adding to 13000023 its reverse (32000031), we get a palindrome (45000054).

The spelling of 13000023 in words is "thirteen million, twenty-three", and thus it is an aban number and an uban number.