13169231 has 2 divisors, whose sum is σ = 13169232. Its totient is φ = 13169230.

The previous prime is 13169227. The next prime is 13169243. The reversal of 13169231 is 13296131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13169231 - 2² = 13169227 is a prime.

It is a super-2 number, since 2×13169231² = 346857290262722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13169231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13169201) 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, 6584615 + 6584616.

It is an arithmetic number, because the mean of its divisors is an integer number (6584616).

Almost surely, 2^13169231 is an apocalyptic number.

13169231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13169231 is an equidigital number, since it uses as much as digits as its factorization.

13169231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 26.

The square root of 13169231 is about 3628.9435101693. The cubic root of 13169231 is about 236.1493775651.

The spelling of 13169231 in words is "thirteen million, one hundred sixty-nine thousand, two hundred thirty-one".