1115131 has 2 divisors, whose sum is σ = 1115132.
Its totient is φ = 1115130.
The previous prime is 1115117. The next prime is 1115189. The reversal of 1115131 is 1315111.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1115131 - 25 = 1115099 is a prime.
It is a super-2 number, since 2×11151312 = 2487034294322, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (1115531) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557565 + 557566.
It is an arithmetic number, because the mean of its divisors is an integer number (557566).
21115131 is an apocalyptic number.
1115131 is a deficient number, since it is larger than the sum of its proper divisors (1).
1115131 is an equidigital number, since it uses as much as digits as its factorization.
1115131 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 15, while the sum is 13.
The square root of 1115131 is about 1055.9976325731.
The cubic root of 1115131 is about 103.6991738274.
The spelling of 1115131 in words is "one million, one hundred fifteen thousand, one hundred thirty-one".