12893831 has 2 divisors, whose sum is σ = 12893832. Its totient is φ = 12893830.

The previous prime is 12893819. The next prime is 12893833. The reversal of 12893831 is 13839821.

12893831 is nontrivially palindromic in base 5.

It is a strong prime.

It is an emirp because it is prime and its reverse (13839821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12893831 - 2⁶ = 12893767 is a prime.

It is a super-2 number, since 2×12893831² = 332501755713122, which contains 22 as substring.

Together with 12893833, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12893791 and 12893800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12893833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6446915 + 6446916.

It is an arithmetic number, because the mean of its divisors is an integer number (6446916).

Almost surely, 2^12893831 is an apocalyptic number.

12893831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12893831 is an equidigital number, since it uses as much as digits as its factorization.

12893831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 12893831 is about 3590.7981007013. The cubic root of 12893831 is about 234.4916186693.

The spelling of 12893831 in words is "twelve million, eight hundred ninety-three thousand, eight hundred thirty-one".