13291111 has 2 divisors, whose sum is σ = 13291112. Its totient is φ = 13291110.

The previous prime is 13291087. The next prime is 13291121. The reversal of 13291111 is 11119231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13291111 - 2⁷ = 13290983 is a prime.

It is a super-2 number, since 2×13291111² = 353307263228642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13291121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6645555 + 6645556.

It is an arithmetic number, because the mean of its divisors is an integer number (6645556).

Almost surely, 2^13291111 is an apocalyptic number.

13291111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13291111 is an equidigital number, since it uses as much as digits as its factorization.

13291111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 19.

The square root of 13291111 is about 3645.6976012829. The cubic root of 13291111 is about 236.8756550688.

The spelling of 13291111 in words is "thirteen million, two hundred ninety-one thousand, one hundred eleven".