12904831 has 4 divisors (see below), whose sum is σ = 12913200. Its totient is φ = 12896464.

The previous prime is 12904813. The next prime is 12904841. The reversal of 12904831 is 13840921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13840921 = 1657 ⋅8353.

It is a cyclic number.

It is not a de Polignac number, because 12904831 - 2⁹ = 12904319 is a prime.

It is a super-2 number, since 2×12904831² = 333069326277122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12904831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12904841) 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, 1126 + ... + 5203.

It is an arithmetic number, because the mean of its divisors is an integer number (3228300).

Almost surely, 2^12904831 is an apocalyptic number.

12904831 is a deficient number, since it is larger than the sum of its proper divisors (8369).

12904831 is an equidigital number, since it uses as much as digits as its factorization.

12904831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8368.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12904831 is about 3592.3294670729. The cubic root of 12904831 is about 234.5582829688.

The spelling of 12904831 in words is "twelve million, nine hundred four thousand, eight hundred thirty-one".