12821343 has 8 divisors (see below), whose sum is σ = 17252400. Its totient is φ = 8468928.

The previous prime is 12821329. The next prime is 12821357. The reversal of 12821343 is 34312821.

It is an interprime number because it is at equal distance from previous prime (12821329) and next prime (12821357).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12821343 - 2⁵ = 12821311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12821843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19278 + ... + 19931.

It is an arithmetic number, because the mean of its divisors is an integer number (2156550).

Almost surely, 2^12821343 is an apocalyptic number.

12821343 is a deficient number, since it is larger than the sum of its proper divisors (4431057).

12821343 is a wasteful number, since it uses less digits than its factorization.

12821343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39321.

The product of its digits is 1152, while the sum is 24.

The square root of 12821343 is about 3580.6902965769. The cubic root of 12821343 is about 234.0513620909.

The spelling of 12821343 in words is "twelve million, eight hundred twenty-one thousand, three hundred forty-three".