13256111 has 4 divisors (see below), whose sum is σ = 14461224. Its totient is φ = 12051000.

The previous prime is 13256077. The next prime is 13256137. The reversal of 13256111 is 11165231.

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

It is a cyclic number.

It is not a de Polignac number, because 13256111 - 2¹⁴ = 13239727 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 (13255111) 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, 602540 + ... + 602561.

It is an arithmetic number, because the mean of its divisors is an integer number (3615306).

Almost surely, 2^13256111 is an apocalyptic number.

13256111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13256111 is a deficient number, since it is larger than the sum of its proper divisors (1205113).

13256111 is a wasteful number, since it uses less digits than its factorization.

13256111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205112.

The product of its digits is 180, while the sum is 20.

The square root of 13256111 is about 3640.8942582833. The cubic root of 13256111 is about 236.6675476614.

The spelling of 13256111 in words is "thirteen million, two hundred fifty-six thousand, one hundred eleven".