1321044063 has 4 divisors (see below), whose sum is σ = 1761392088. Its totient is φ = 880696040.

The previous prime is 1321044037. The next prime is 1321044071. The reversal of 1321044063 is 3604401231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321044063 - 2²¹ = 1318946911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321046063) 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, 220174008 + ... + 220174013.

It is an arithmetic number, because the mean of its divisors is an integer number (440348022).

Almost surely, 2^1321044063 is an apocalyptic number.

1321044063 is a deficient number, since it is larger than the sum of its proper divisors (440348025).

1321044063 is an equidigital number, since it uses as much as digits as its factorization.

1321044063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440348024.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1321044063 is about 36346.1698532321. The cubic root of 1321044063 is about 1097.2504506101.

Adding to 1321044063 its reverse (3604401231), we get a palindrome (4925445294).

The spelling of 1321044063 in words is "one billion, three hundred twenty-one million, forty-four thousand, sixty-three".