12831493 has 4 divisors (see below), whose sum is σ = 13389408. Its totient is φ = 12273580.

The previous prime is 12831491. The next prime is 12831499. The reversal of 12831493 is 39413821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39413821 = 53 ⋅743657.

It is a cyclic number.

It is not a de Polignac number, because 12831493 - 2¹ = 12831491 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 (12831491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278923 + ... + 278968.

It is an arithmetic number, because the mean of its divisors is an integer number (3347352).

Almost surely, 2^12831493 is an apocalyptic number.

It is an amenable number.

12831493 is a deficient number, since it is larger than the sum of its proper divisors (557915).

12831493 is an equidigital number, since it uses as much as digits as its factorization.

12831493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557914.

The product of its digits is 5184, while the sum is 31.

The square root of 12831493 is about 3582.1073406586. The cubic root of 12831493 is about 234.1131079552.

The spelling of 12831493 in words is "twelve million, eight hundred thirty-one thousand, four hundred ninety-three".