1343221023 has 4 divisors (see below), whose sum is σ = 1790961368. Its totient is φ = 895480680.

The previous prime is 1343221013. The next prime is 1343221039. The reversal of 1343221023 is 3201223431.

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

It is not a de Polignac number, because 1343221023 - 2¹⁶ = 1343155487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343221013) 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, 223870168 + ... + 223870173.

It is an arithmetic number, because the mean of its divisors is an integer number (447740342).

Almost surely, 2^1343221023 is an apocalyptic number.

1343221023 is a deficient number, since it is larger than the sum of its proper divisors (447740345).

1343221023 is an equidigital number, since it uses as much as digits as its factorization.

1343221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447740344.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1343221023 is about 36649.9798499262. The cubic root of 1343221023 is about 1103.3564211653.

Adding to 1343221023 its reverse (3201223431), we get a palindrome (4544444454).

The spelling of 1343221023 in words is "one billion, three hundred forty-three million, two hundred twenty-one thousand, twenty-three".