1123333213 has 4 divisors (see below), whose sum is σ = 1123400700. Its totient is φ = 1123265728.

The previous prime is 1123333207. The next prime is 1123333231. The reversal of 1123333213 is 3123333211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 560837124 + 562496089 = 23682^2 + 23717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123333213 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 (1123333313) 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, 11013 + ... + 48661.

It is an arithmetic number, because the mean of its divisors is an integer number (280850175).

Almost surely, 2^1123333213 is an apocalyptic number.

It is an amenable number.

1123333213 is a deficient number, since it is larger than the sum of its proper divisors (67487).

1123333213 is an equidigital number, since it uses as much as digits as its factorization.

1123333213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67486.

The product of its digits is 972, while the sum is 22.

The square root of 1123333213 is about 33516.1634588447. The cubic root of 1123333213 is about 1039.5280196243.

Adding to 1123333213 its reverse (3123333211), we get a palindrome (4246666424).

The spelling of 1123333213 in words is "one billion, one hundred twenty-three million, three hundred thirty-three thousand, two hundred thirteen".