1233213 has 4 divisors (see below), whose sum is σ = 1644288. Its totient is φ = 822140.

The previous prime is 1233209. The next prime is 1233241. The reversal of 1233213 is 3123321.

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 1233213 - 2² = 1233209 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1233192 and 1233201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233263) 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 3 ways as a sum of consecutive naturals, for example, 205533 + ... + 205538.

It is an arithmetic number, because the mean of its divisors is an integer number (411072).

2^1233213 is an apocalyptic number.

It is an amenable number.

1233213 is a deficient number, since it is larger than the sum of its proper divisors (411075).

1233213 is an equidigital number, since it uses as much as digits as its factorization.

1233213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411074.

The product of its digits is 108, while the sum is 15.

The square root of 1233213 is about 1110.5012381803. The cubic root of 1233213 is about 107.2373396415.

Adding to 1233213 its product of digits (108), we get a palindrome (1233321).

Adding to 1233213 its reverse (3123321), we get a palindrome (4356534).

It can be divided in two parts, 123321 and 3, that multiplied together give a palindrome (369963).

The spelling of 1233213 in words is "one million, two hundred thirty-three thousand, two hundred thirteen".