13012443 has 6 divisors (see below), whose sum is σ = 18795764. Its totient is φ = 8674956.

The previous prime is 13012427. The next prime is 13012471. The reversal of 13012443 is 34421031.

It is not a de Polignac number, because 13012443 - 2⁴ = 13012427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13012403) 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, 722905 + ... + 722922.

Almost surely, 2^13012443 is an apocalyptic number.

13012443 is a deficient number, since it is larger than the sum of its proper divisors (5783321).

13012443 is a wasteful number, since it uses less digits than its factorization.

13012443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445833 (or 1445830 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13012443 is about 3607.2763963966. The cubic root of 13012443 is about 235.2084644843.

Adding to 13012443 its reverse (34421031), we get a palindrome (47433474).

The spelling of 13012443 in words is "thirteen million, twelve thousand, four hundred forty-three".