11413881 has 12 divisors (see below), whose sum is σ = 16608852. Its totient is φ = 7552896.

The previous prime is 11413879. The next prime is 11413891. The reversal of 11413881 is 18831411.

11413881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3240000 + 8173881 = 1800^2 + 2859^2 .

It is not a de Polignac number, because 11413881 - 2¹ = 11413879 is a prime.

It is a super-2 number, since 2×11413881² = 260553358964322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11413811) 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 11 ways as a sum of consecutive naturals, for example, 3396 + ... + 5861.

It is an arithmetic number, because the mean of its divisors is an integer number (1384071).

Almost surely, 2^11413881 is an apocalyptic number.

It is an amenable number.

11413881 is a deficient number, since it is larger than the sum of its proper divisors (5194971).

11413881 is a wasteful number, since it uses less digits than its factorization.

11413881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9400 (or 9397 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 11413881 is about 3378.4435765601. The cubic root of 11413881 is about 225.1530218326.

The spelling of 11413881 in words is "eleven million, four hundred thirteen thousand, eight hundred eighty-one".