13261911 has 8 divisors (see below), whose sum is σ = 19042800. Its totient is φ = 8161152.

The previous prime is 13261907. The next prime is 13261999. The reversal of 13261911 is 11916231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13261911 - 2² = 13261907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13263911) 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 7 ways as a sum of consecutive naturals, for example, 169986 + ... + 170063.

It is an arithmetic number, because the mean of its divisors is an integer number (2380350).

Almost surely, 2^13261911 is an apocalyptic number.

13261911 is a deficient number, since it is larger than the sum of its proper divisors (5780889).

13261911 is a wasteful number, since it uses less digits than its factorization.

13261911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340065.

The product of its digits is 324, while the sum is 24.

The square root of 13261911 is about 3641.6906787919. The cubic root of 13261911 is about 236.7020593325.

The spelling of 13261911 in words is "thirteen million, two hundred sixty-one thousand, nine hundred eleven".