1213361 has 4 divisors (see below), whose sum is σ = 1228800. Its totient is φ = 1197924.

The previous prime is 1213357. The next prime is 1213367. The reversal of 1213361 is 1633121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1213361 - 2² = 1213357 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213367) 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, 7601 + ... + 7758.

It is an arithmetic number, because the mean of its divisors is an integer number (307200).

2^1213361 is an apocalyptic number.

It is an amenable number.

1213361 is a deficient number, since it is larger than the sum of its proper divisors (15439).

1213361 is an equidigital number, since it uses as much as digits as its factorization.

1213361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15438.

The product of its digits is 108, while the sum is 17.

The square root of 1213361 is about 1101.5266678569. The cubic root of 1213361 is about 106.6587960773.

Adding to 1213361 its reverse (1633121), we get a palindrome (2846482).

The spelling of 1213361 in words is "one million, two hundred thirteen thousand, three hundred sixty-one".