1231185 has 16 divisors (see below), whose sum is σ = 1984320. Its totient is φ = 651840.

The previous prime is 1231177. The next prime is 1231193. The reversal of 1231185 is 5811321.

It is an interprime number because it is at equal distance from previous prime (1231177) and next prime (1231193).

It is not a de Polignac number, because 1231185 - 2³ = 1231177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2971 + ... + 3359.

It is an arithmetic number, because the mean of its divisors is an integer number (124020).

2^1231185 is an apocalyptic number.

1231185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1231185 is a deficient number, since it is larger than the sum of its proper divisors (753135).

1231185 is a wasteful number, since it uses less digits than its factorization.

1231185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its digits is 240, while the sum is 21.

The square root of 1231185 is about 1109.5877612879. The cubic root of 1231185 is about 107.1785239985.

The spelling of 1231185 in words is "one million, two hundred thirty-one thousand, one hundred eighty-five".