1331443223 has 8 divisors (see below), whose sum is σ = 1464488976. Its totient is φ = 1210401720.

The previous prime is 1331443177. The next prime is 1331443231. The reversal of 1331443223 is 3223441331.

It is not a de Polignac number, because 1331443223 - 2¹⁰ = 1331442199 is a prime.

It is a Duffinian number.

1331443223 is a modest number, since divided by 443223 gives 1331 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1331443192 and 1331443201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331443283) 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 7 ways as a sum of consecutive naturals, for example, 498836 + ... + 501497.

It is an arithmetic number, because the mean of its divisors is an integer number (183061122).

Almost surely, 2^1331443223 is an apocalyptic number.

1331443223 is a deficient number, since it is larger than the sum of its proper divisors (133045753).

1331443223 is an equidigital number, since it uses as much as digits as its factorization.

1331443223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000366 (or 1000344 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

The square root of 1331443223 is about 36488.9465866035. The cubic root of 1331443223 is about 1100.1220864494.

Adding to 1331443223 its reverse (3223441331), we get a palindrome (4554884554).

The spelling of 1331443223 in words is "one billion, three hundred thirty-one million, four hundred forty-three thousand, two hundred twenty-three".