563213201321 has 8 divisors (see below), whose sum is σ = 596551879944. Its totient is φ = 529897688320.

The previous prime is 563213201303. The next prime is 563213201323. The reversal of 563213201321 is 123102312365.

563213201321 = 182009² + 182010² + ... + 182025².

It is a happy number.

563213201321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 99499870096 + 463713331225 = 315436^2 + 680965^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 563213201321 - 2²² = 563209007017 is a prime.

It is a super-2 number, since 2×563213201321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (563213201323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5741330 + ... + 5838603.

It is an arithmetic number, because the mean of its divisors is an integer number (74568984993).

Almost surely, 2^563213201321 is an apocalyptic number.

It is an amenable number.

563213201321 is a deficient number, since it is larger than the sum of its proper divisors (33338678623).

563213201321 is a wasteful number, since it uses less digits than its factorization.

563213201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11582811.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 563213201321 its reverse (123102312365), we get a palindrome (686315513686).

The spelling of 563213201321 in words is "five hundred sixty-three billion, two hundred thirteen million, two hundred one thousand, three hundred twenty-one".