12997123 has 4 divisors (see below), whose sum is σ = 13314168. Its totient is φ = 12680080.

The previous prime is 12997111. The next prime is 12997151. The reversal of 12997123 is 32179921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12997123 - 2¹³ = 12988931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12992123) 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, 158461 + ... + 158542.

It is an arithmetic number, because the mean of its divisors is an integer number (3328542).

Almost surely, 2^12997123 is an apocalyptic number.

12997123 is a deficient number, since it is larger than the sum of its proper divisors (317045).

12997123 is an equidigital number, since it uses as much as digits as its factorization.

12997123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317044.

The product of its digits is 6804, while the sum is 34.

The square root of 12997123 is about 3605.1522852717. The cubic root of 12997123 is about 235.1161218772.

The spelling of 12997123 in words is "twelve million, nine hundred ninety-seven thousand, one hundred twenty-three".