11381279 has 24 divisors (see below), whose sum is σ = 15110928. Its totient is φ = 8467200.

The previous prime is 11381261. The next prime is 11381299. The reversal of 11381279 is 97218311.

11381279 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11381279 - 2⁸ = 11381023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10304 + ... + 11354.

It is an arithmetic number, because the mean of its divisors is an integer number (629622).

Almost surely, 2^11381279 is an apocalyptic number.

11381279 is a deficient number, since it is larger than the sum of its proper divisors (3729649).

11381279 is a wasteful number, since it uses less digits than its factorization.

11381279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1088 counting only the distinct ones).

The product of its digits is 3024, while the sum is 32.

The square root of 11381279 is about 3373.6151232765. The cubic root of 11381279 is about 224.9384457133.

The spelling of 11381279 in words is "eleven million, three hundred eighty-one thousand, two hundred seventy-nine".