1443223013 has 4 divisors (see below), whose sum is σ = 1467684480. Its totient is φ = 1418761548.

The previous prime is 1443223009. The next prime is 1443223043. The reversal of 1443223013 is 3103223441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3103223441 = 43 ⋅72167987.

It is a cyclic number.

It is not a de Polignac number, because 1443223013 - 2² = 1443223009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1443223013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443223003) 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, 12230645 + ... + 12230762.

It is an arithmetic number, because the mean of its divisors is an integer number (366921120).

Almost surely, 2^1443223013 is an apocalyptic number.

It is an amenable number.

1443223013 is a deficient number, since it is larger than the sum of its proper divisors (24461467).

1443223013 is an equidigital number, since it uses as much as digits as its factorization.

1443223013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24461466.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1443223013 is about 37989.7751112059. The cubic root of 1443223013 is about 1130.0850989244.

Adding to 1443223013 its reverse (3103223441), we get a palindrome (4546446454).

The spelling of 1443223013 in words is "one billion, four hundred forty-three million, two hundred twenty-three thousand, thirteen".