1213133323 has 8 divisors (see below), whose sum is σ = 1256227200. Its totient is φ = 1170287040.

The previous prime is 1213133303. The next prime is 1213133333. The reversal of 1213133323 is 3233313121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213133323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213133294 and 1213133303.

It is not an unprimeable number, because it can be changed into a prime (1213133303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51898 + ... + 71551.

It is an arithmetic number, because the mean of its divisors is an integer number (157028400).

Almost surely, 2^1213133323 is an apocalyptic number.

1213133323 is a deficient number, since it is larger than the sum of its proper divisors (43093877).

1213133323 is a wasteful number, since it uses less digits than its factorization.

1213133323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123797.

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

The square root of 1213133323 is about 34830.0634940564. The cubic root of 1213133323 is about 1066.5212445088.

Adding to 1213133323 its reverse (3233313121), we get a palindrome (4446446444).

It can be divided in two parts, 12131 and 33323, that added together give a palindrome (45454).

The spelling of 1213133323 in words is "one billion, two hundred thirteen million, one hundred thirty-three thousand, three hundred twenty-three".