20321231033303 has 4 divisors (see below), whose sum is σ = 21390769508760. Its totient is φ = 19251692557848.

The previous prime is 20321231033293. The next prime is 20321231033309. The reversal of 20321231033303 is 30333013212302.

It is a happy number.

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 20321231033303 - 2¹⁰ = 20321231032279 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 (20321231033309) 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, 534769237700 + ... + 534769237737.

It is an arithmetic number, because the mean of its divisors is an integer number (5347692377190).

Almost surely, 2^{20321231033303} is an apocalyptic number.

20321231033303 is a deficient number, since it is larger than the sum of its proper divisors (1069538475457).

20321231033303 is a wasteful number, since it uses less digits than its factorization.

20321231033303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069538475456.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 20321231033303 its reverse (30333013212302), we get a palindrome (50654244245605).

The spelling of 20321231033303 in words is "twenty trillion, three hundred twenty-one billion, two hundred thirty-one million, thirty-three thousand, three hundred three".