1320223443 has 64 divisors (see below), whose sum is σ = 2277310464. Its totient is φ = 660240000.

The previous prime is 1320223439. The next prime is 1320223517. The reversal of 1320223443 is 3443220231.

It is not a de Polignac number, because 1320223443 - 2² = 1320223439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320223643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1882993 + ... + 1883693.

It is an arithmetic number, because the mean of its divisors is an integer number (35582976).

Almost surely, 2^1320223443 is an apocalyptic number.

1320223443 is a deficient number, since it is larger than the sum of its proper divisors (957087021).

1320223443 is a wasteful number, since it uses less digits than its factorization.

1320223443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 1320223443 is about 36334.8791521315. The cubic root of 1320223443 is about 1097.0232030363.

Adding to 1320223443 its reverse (3443220231), we get a palindrome (4763443674).

The spelling of 1320223443 in words is "one billion, three hundred twenty million, two hundred twenty-three thousand, four hundred forty-three".