13381811 has 8 divisors (see below), whose sum is σ = 13726800. Its totient is φ = 13040352.

The previous prime is 13381807. The next prime is 13381813. The reversal of 13381811 is 11818331.

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

It is a cyclic number.

It is not a de Polignac number, because 13381811 - 2² = 13381807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13381813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7865 + ... + 9413.

It is an arithmetic number, because the mean of its divisors is an integer number (1715850).

Almost surely, 2^13381811 is an apocalyptic number.

13381811 is a deficient number, since it is larger than the sum of its proper divisors (344989).

13381811 is a wasteful number, since it uses less digits than its factorization.

13381811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765.

The product of its digits is 576, while the sum is 26.

The square root of 13381811 is about 3658.1157718148. The cubic root of 13381811 is about 237.4132558562.

The spelling of 13381811 in words is "thirteen million, three hundred eighty-one thousand, eight hundred eleven".