12873213 has 6 divisors (see below), whose sum is σ = 18594654. Its totient is φ = 8582136.

The previous prime is 12873197. The next prime is 12873229. The reversal of 12873213 is 31237821.

It is an interprime number because it is at equal distance from previous prime (12873197) and next prime (12873229).

It can be written as a sum of positive squares in only one way, i.e., 9622404 + 3250809 = 3102^2 + 1803^2 .

It is not a de Polignac number, because 12873213 - 2⁴ = 12873197 is a prime.

It is a super-2 number, since 2×12873213² = 331439225886738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12877213) 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, 715170 + ... + 715187.

It is an arithmetic number, because the mean of its divisors is an integer number (3099109).

Almost surely, 2^12873213 is an apocalyptic number.

It is an amenable number.

12873213 is a deficient number, since it is larger than the sum of its proper divisors (5721441).

12873213 is a wasteful number, since it uses less digits than its factorization.

12873213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430363 (or 1430360 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 12873213 is about 3587.9260025814. The cubic root of 12873213 is about 234.3665633230.

The spelling of 12873213 in words is "twelve million, eight hundred seventy-three thousand, two hundred thirteen".