12791237 has 4 divisors (see below), whose sum is σ = 13464480. Its totient is φ = 12117996.

The previous prime is 12791231. The next prime is 12791249. The reversal of 12791237 is 73219721.

12791237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12791237 - 2⁶ = 12791173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791231) 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, 336593 + ... + 336630.

It is an arithmetic number, because the mean of its divisors is an integer number (3366120).

Almost surely, 2^12791237 is an apocalyptic number.

It is an amenable number.

12791237 is a deficient number, since it is larger than the sum of its proper divisors (673243).

12791237 is an equidigital number, since it uses as much as digits as its factorization.

12791237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673242.

The product of its digits is 5292, while the sum is 32.

The square root of 12791237 is about 3576.4838878429. The cubic root of 12791237 is about 233.8680252717.

The spelling of 12791237 in words is "twelve million, seven hundred ninety-one thousand, two hundred thirty-seven".