11131279 has 2 divisors, whose sum is σ = 11131280. Its totient is φ = 11131278.

The previous prime is 11131271. The next prime is 11131327. The reversal of 11131279 is 97213111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11131279 - 2³ = 11131271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11131271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565639 + 5565640.

It is an arithmetic number, because the mean of its divisors is an integer number (5565640).

Almost surely, 2^11131279 is an apocalyptic number.

11131279 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131279 is an equidigital number, since it uses as much as digits as its factorization.

11131279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378, while the sum is 25.

The square root of 11131279 is about 3336.3571451510. The cubic root of 11131279 is about 223.2792455836.

The spelling of 11131279 in words is "eleven million, one hundred thirty-one thousand, two hundred seventy-nine".