1213324223 has 4 divisors (see below), whose sum is σ = 1239139680. Its totient is φ = 1187508768.

The previous prime is 1213324213. The next prime is 1213324261. The reversal of 1213324223 is 3224233121.

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

It is not a de Polignac number, because 1213324223 - 2⁴ = 1213324207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213324213) 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, 12907658 + ... + 12907751.

It is an arithmetic number, because the mean of its divisors is an integer number (309784920).

Almost surely, 2^1213324223 is an apocalyptic number.

1213324223 is a deficient number, since it is larger than the sum of its proper divisors (25815457).

1213324223 is an equidigital number, since it uses as much as digits as its factorization.

1213324223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25815456.

The product of its digits is 1728, while the sum is 23.

The square root of 1213324223 is about 34832.8038348910. The cubic root of 1213324223 is about 1066.5771845617.

Adding to 1213324223 its reverse (3224233121), we get a palindrome (4437557344).

The spelling of 1213324223 in words is "one billion, two hundred thirteen million, three hundred twenty-four thousand, two hundred twenty-three".