1185131 has 2 divisors, whose sum is σ = 1185132. Its totient is φ = 1185130.

The previous prime is 1185127. The next prime is 1185179. The reversal of 1185131 is 1315811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1185131 - 2² = 1185127 is a prime.

It is a super-2 number, since 2×1185131² = 2809070974322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1185181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 592565 + 592566.

It is an arithmetic number, because the mean of its divisors is an integer number (592566).

2^1185131 is an apocalyptic number.

1185131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1185131 is an equidigital number, since it uses as much as digits as its factorization.

1185131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 20.

The square root of 1185131 is about 1088.6372214838. The cubic root of 1185131 is about 105.8251240179.

The spelling of 1185131 in words is "one million, one hundred eighty-five thousand, one hundred thirty-one".