13189831 has 2 divisors, whose sum is σ = 13189832. Its totient is φ = 13189830.

The previous prime is 13189829. The next prime is 13189837. The reversal of 13189831 is 13898131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13189831 - 2¹ = 13189829 is a prime.

It is a super-2 number, since 2×13189831² = 347943283617122, which contains 22 as substring.

Together with 13189829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13189837) 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 as a sum of consecutive naturals, namely, 6594915 + 6594916.

It is an arithmetic number, because the mean of its divisors is an integer number (6594916).

Almost surely, 2^13189831 is an apocalyptic number.

13189831 is a deficient number, since it is larger than the sum of its proper divisors (1).

13189831 is an equidigital number, since it uses as much as digits as its factorization.

13189831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 13189831 is about 3631.7806927181. The cubic root of 13189831 is about 236.2724458205.

The spelling of 13189831 in words is "thirteen million, one hundred eighty-nine thousand, eight hundred thirty-one".