1213185 has 16 divisors (see below), whose sum is σ = 2004480. Its totient is φ = 625920.

The previous prime is 1213183. The next prime is 1213189. The reversal of 1213185 is 5813121.

It is not a de Polignac number, because 1213185 - 2¹ = 1213183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840 + ... + 1769.

It is an arithmetic number, because the mean of its divisors is an integer number (125280).

2^1213185 is an apocalyptic number.

1213185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1213185 is a deficient number, since it is larger than the sum of its proper divisors (791295).

1213185 is a wasteful number, since it uses less digits than its factorization.

1213185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648.

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

The square root of 1213185 is about 1101.4467758362. The cubic root of 1213185 is about 106.6536388169.

The spelling of 1213185 in words is "one million, two hundred thirteen thousand, one hundred eighty-five".