1331313223 has 4 divisors (see below), whose sum is σ = 1401382360. Its totient is φ = 1261244088.

The previous prime is 1331313167. The next prime is 1331313233. The reversal of 1331313223 is 3223131331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331313223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331313194 and 1331313203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331313233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35034540 + ... + 35034577.

It is an arithmetic number, because the mean of its divisors is an integer number (350345590).

Almost surely, 2^1331313223 is an apocalyptic number.

1331313223 is a deficient number, since it is larger than the sum of its proper divisors (70069137).

1331313223 is an equidigital number, since it uses as much as digits as its factorization.

1331313223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70069136.

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

The square root of 1331313223 is about 36487.1651817458. The cubic root of 1331313223 is about 1100.0862805601.

Adding to 1331313223 its reverse (3223131331), we get a palindrome (4554444554).

The spelling of 1331313223 in words is "one billion, three hundred thirty-one million, three hundred thirteen thousand, two hundred twenty-three".