12831919 has 2 divisors, whose sum is σ = 12831920. Its totient is φ = 12831918.

The previous prime is 12831913. The next prime is 12831937. The reversal of 12831919 is 91913821.

It is a weak prime.

It is an emirp because it is prime and its reverse (91913821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12831919 - 2³ = 12831911 is a prime.

It is a super-2 number, since 2×12831919² = 329316290445122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12831911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6415959 + 6415960.

It is an arithmetic number, because the mean of its divisors is an integer number (6415960).

Almost surely, 2^12831919 is an apocalyptic number.

12831919 is a deficient number, since it is larger than the sum of its proper divisors (1).

12831919 is an equidigital number, since it uses as much as digits as its factorization.

12831919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 34.

The square root of 12831919 is about 3582.1668023698. The cubic root of 12831919 is about 234.1156987444.

The spelling of 12831919 in words is "twelve million, eight hundred thirty-one thousand, nine hundred nineteen".