1218341 has 4 divisors (see below), whose sum is σ = 1227372. Its totient is φ = 1209312.

The previous prime is 1218313. The next prime is 1218367. The reversal of 1218341 is 1438121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 417316 + 801025 = 646^2 + 895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1218341 - 2⁶ = 1218277 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4310 + ... + 4583.

It is an arithmetic number, because the mean of its divisors is an integer number (306843).

2^1218341 is an apocalyptic number.

It is an amenable number.

1218341 is a deficient number, since it is larger than the sum of its proper divisors (9031).

1218341 is an equidigital number, since it uses as much as digits as its factorization.

1218341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9030.

The product of its digits is 192, while the sum is 20.

The square root of 1218341 is about 1103.7848522244. The cubic root of 1218341 is about 106.8045168686.

The spelling of 1218341 in words is "one million, two hundred eighteen thousand, three hundred forty-one".