13231019 has 2 divisors, whose sum is σ = 13231020. Its totient is φ = 13231018.

The previous prime is 13230991. The next prime is 13231027. The reversal of 13231019 is 91013231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231019 is a prime.

It is a super-2 number, since 2×13231019² = 350119727556722, which contains 22 as substring.

It is a Chen prime.

It is equal to p₈₆₃₃₀₀ and since 13231019 and 863300 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13231319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615509 + 6615510.

It is an arithmetic number, because the mean of its divisors is an integer number (6615510).

Almost surely, 2^13231019 is an apocalyptic number.

13231019 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231019 is an equidigital number, since it uses as much as digits as its factorization.

13231019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 13231019 is about 3637.4467693700. The cubic root of 13231019 is about 236.5181269414.

The spelling of 13231019 in words is "thirteen million, two hundred thirty-one thousand, nineteen".