220311230032321 has 4 divisors (see below), whose sum is σ = 220408155344772. Its totient is φ = 220214304719872.

The previous prime is 220311230032307. The next prime is 220311230032363. The reversal of 220311230032321 is 123230032113022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 184040290161025 + 36270939871296 = 13566145^2 + 6022536^2 .

It is a cyclic number.

It is not a de Polignac number, because 220311230032321 - 2¹⁹ = 220311229508033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220311230032921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48462652816 + ... + 48462657361.

It is an arithmetic number, because the mean of its divisors is an integer number (55102038836193).

Almost surely, 2^{220311230032321} is an apocalyptic number.

It is an amenable number.

220311230032321 is a deficient number, since it is larger than the sum of its proper divisors (96925312451).

220311230032321 is an equidigital number, since it uses as much as digits as its factorization.

220311230032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96925312450.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 220311230032321 its reverse (123230032113022), we get a palindrome (343541262145343).

The spelling of 220311230032321 in words is "two hundred twenty trillion, three hundred eleven billion, two hundred thirty million, thirty-two thousand, three hundred twenty-one".