1213347 has 4 divisors (see below), whose sum is σ = 1617800. Its totient is φ = 808896.

The previous prime is 1213339. The next prime is 1213357. The reversal of 1213347 is 7433121.

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

It is not a de Polignac number, because 1213347 - 2³ = 1213339 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213327) 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, 202222 + ... + 202227.

It is an arithmetic number, because the mean of its divisors is an integer number (404450).

2^1213347 is an apocalyptic number.

1213347 is a deficient number, since it is larger than the sum of its proper divisors (404453).

1213347 is an equidigital number, since it uses as much as digits as its factorization.

1213347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404452.

The product of its digits is 504, while the sum is 21.

The square root of 1213347 is about 1101.5203130220. The cubic root of 1213347 is about 106.6583858589.

Adding to 1213347 its reverse (7433121), we get a palindrome (8646468).

The spelling of 1213347 in words is "one million, two hundred thirteen thousand, three hundred forty-seven".