20303220201331 has 4 divisors (see below), whose sum is σ = 20427779834632. Its totient is φ = 20178660568032.

The previous prime is 20303220201323. The next prime is 20303220201343. The reversal of 20303220201331 is 13310202230302.

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 20303220201331 - 2³ = 20303220201323 is a prime.

It is a super-2 number, since 2×20303220201331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20303220201031) 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, 62279816406 + ... + 62279816731.

It is an arithmetic number, because the mean of its divisors is an integer number (5106944958658).

Almost surely, 2^{20303220201331} is an apocalyptic number.

20303220201331 is a deficient number, since it is larger than the sum of its proper divisors (124559633301).

20303220201331 is a wasteful number, since it uses less digits than its factorization.

20303220201331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124559633300.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20303220201331 its reverse (13310202230302), we get a palindrome (33613422431633).

The spelling of 20303220201331 in words is "twenty trillion, three hundred three billion, two hundred twenty million, two hundred one thousand, three hundred thirty-one".