1213373 has 8 divisors (see below), whose sum is σ = 1401792. Its totient is φ = 1028736.

The previous prime is 1213367. The next prime is 1213379. The reversal of 1213373 is 3733121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1213367) and next prime (1213379).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213373 - 2⁴ = 1213357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (175224).

2^1213373 is an apocalyptic number.

It is an amenable number.

1213373 is a deficient number, since it is larger than the sum of its proper divisors (188419).

1213373 is an equidigital number, since it uses as much as digits as its factorization.

1213373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891.

The product of its digits is 378, while the sum is 20.

The square root of 1213373 is about 1101.5321148292. The cubic root of 1213373 is about 106.6591476905.

Adding to 1213373 its reverse (3733121), we get a palindrome (4946494).

The spelling of 1213373 in words is "one million, two hundred thirteen thousand, three hundred seventy-three".