12791361 has 24 divisors (see below), whose sum is σ = 19831392. Its totient is φ = 7248000.

The previous prime is 12791353. The next prime is 12791393. The reversal of 12791361 is 16319721.

It is not a de Polignac number, because 12791361 - 2³ = 12791353 is a prime.

It is a super-3 number, since 3×12791361³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84636 + ... + 84786.

It is an arithmetic number, because the mean of its divisors is an integer number (826308).

Almost surely, 2^12791361 is an apocalyptic number.

12791361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12791361 is a deficient number, since it is larger than the sum of its proper divisors (7040031).

12791361 is a wasteful number, since it uses less digits than its factorization.

12791361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 182 counting only the distinct ones).

The product of its digits is 2268, while the sum is 30.

The square root of 12791361 is about 3576.5012232628. The cubic root of 12791361 is about 233.8687809855.

The spelling of 12791361 in words is "twelve million, seven hundred ninety-one thousand, three hundred sixty-one".