13181029 has 2 divisors, whose sum is σ = 13181030. Its totient is φ = 13181028.

The previous prime is 13181027. The next prime is 13181053. The reversal of 13181029 is 92018131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11716929 + 1464100 = 3423^2 + 1210^2 .

It is a cyclic number.

It is not a de Polignac number, because 13181029 - 2¹ = 13181027 is a prime.

Together with 13181027, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13180994 and 13181012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13181027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6590514 + 6590515.

It is an arithmetic number, because the mean of its divisors is an integer number (6590515).

Almost surely, 2^13181029 is an apocalyptic number.

It is an amenable number.

13181029 is a deficient number, since it is larger than the sum of its proper divisors (1).

13181029 is an equidigital number, since it uses as much as digits as its factorization.

13181029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13181029 is about 3630.5686882360. The cubic root of 13181029 is about 236.2198767151.

The spelling of 13181029 in words is "thirteen million, one hundred eighty-one thousand, twenty-nine".