11115131 has 2 divisors, whose sum is σ = 11115132. Its totient is φ = 11115130.

The previous prime is 11115119. The next prime is 11115163. The reversal of 11115131 is 13151111.

It is a weak prime.

It is an emirp because it is prime and its reverse (13151111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11115131 - 2²² = 6920827 is a prime.

It is a super-2 number, since 2×11115131² = 247092274294322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11115191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557565 + 5557566.

It is an arithmetic number, because the mean of its divisors is an integer number (5557566).

Almost surely, 2^11115131 is an apocalyptic number.

11115131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115131 is an equidigital number, since it uses as much as digits as its factorization.

11115131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15, while the sum is 14.

The square root of 11115131 is about 3333.9362621382. The cubic root of 11115131 is about 223.1712239102.

Adding to 11115131 its reverse (13151111), we get a palindrome (24266242).

The spelling of 11115131 in words is "eleven million, one hundred fifteen thousand, one hundred thirty-one".