1213349 has 4 divisors (see below), whose sum is σ = 1215564. Its totient is φ = 1211136.

The previous prime is 1213339. The next prime is 1213357. The reversal of 1213349 is 9433121.

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 748225 + 465124 = 865^2 + 682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213339) 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, 389 + ... + 1605.

It is an arithmetic number, because the mean of its divisors is an integer number (303891).

2^1213349 is an apocalyptic number.

It is an amenable number.

1213349 is a deficient number, since it is larger than the sum of its proper divisors (2215).

1213349 is an equidigital number, since it uses as much as digits as its factorization.

1213349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214.

The product of its digits is 648, while the sum is 23.

The square root of 1213349 is about 1101.5212208578. The cubic root of 1213349 is about 106.6584444617.

The spelling of 1213349 in words is "one million, two hundred thirteen thousand, three hundred forty-nine".