11103881 has 4 divisors (see below), whose sum is σ = 11218452. Its totient is φ = 10989312.

The previous prime is 11103877. The next prime is 11103889. The reversal of 11103881 is 18830111.

11103881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18830111 = 41 ⋅459271.

It can be written as a sum of positive squares in 2 ways, for example, as 6864400 + 4239481 = 2620^2 + 2059^2 .

It is a cyclic number.

It is not a de Polignac number, because 11103881 - 2² = 11103877 is a prime.

It is a super-2 number, since 2×11103881² = 246592346524322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11103889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57140 + ... + 57333.

It is an arithmetic number, because the mean of its divisors is an integer number (2804613).

Almost surely, 2^11103881 is an apocalyptic number.

It is an amenable number.

11103881 is a deficient number, since it is larger than the sum of its proper divisors (114571).

11103881 is an equidigital number, since it uses as much as digits as its factorization.

11103881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114570.

The product of its (nonzero) digits is 192, while the sum is 23.

The square root of 11103881 is about 3332.2486401828. The cubic root of 11103881 is about 223.0959054459.

Adding to 11103881 its reverse (18830111), we get a palindrome (29933992).

The spelling of 11103881 in words is "eleven million, one hundred three thousand, eight hundred eighty-one".