13051191 has 4 divisors (see below), whose sum is σ = 17401592. Its totient is φ = 8700792.

The previous prime is 13051187. The next prime is 13051201. The reversal of 13051191 is 19115031.

13051191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13051191 - 2² = 13051187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13051141) 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 in 3 ways as a sum of consecutive naturals, for example, 2175196 + ... + 2175201.

It is an arithmetic number, because the mean of its divisors is an integer number (4350398).

Almost surely, 2^13051191 is an apocalyptic number.

13051191 is a deficient number, since it is larger than the sum of its proper divisors (4350401).

13051191 is an equidigital number, since it uses as much as digits as its factorization.

13051191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350400.

The product of its (nonzero) digits is 135, while the sum is 21.

The square root of 13051191 is about 3612.6432151542. The cubic root of 13051191 is about 235.4416983259.

The spelling of 13051191 in words is "thirteen million, fifty-one thousand, one hundred ninety-one".