1213273 has 16 divisors (see below), whose sum is σ = 1399680. Its totient is φ = 1044736.

The previous prime is 1213271. The next prime is 1213301. The reversal of 1213273 is 3723121.

It is a cyclic number.

It is not a de Polignac number, because 1213273 - 2¹ = 1213271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213273.

It is not an unprimeable number, because it can be changed into a prime (1213271) 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, 11286 + ... + 11392.

It is an arithmetic number, because the mean of its divisors is an integer number (87480).

2^1213273 is an apocalyptic number.

It is an amenable number.

1213273 is a deficient number, since it is larger than the sum of its proper divisors (186407).

1213273 is a wasteful number, since it uses less digits than its factorization.

1213273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176.

The product of its digits is 252, while the sum is 19.

The square root of 1213273 is about 1101.4867225709. The cubic root of 1213273 is about 106.6562175094.

Adding to 1213273 its reverse (3723121), we get a palindrome (4936394).

The spelling of 1213273 in words is "one million, two hundred thirteen thousand, two hundred seventy-three".