20320103331 has 12 divisors (see below), whose sum is σ = 32019556920. Its totient is φ = 12315214080.

The previous prime is 20320103311. The next prime is 20320103339. The reversal of 20320103331 is 13330102302.

20320103331 is a `hidden beast` number, since 2 + 0 + 320 + 10 + 3 + 331 = 666.

It is not a de Polignac number, because 20320103331 - 2⁷ = 20320103203 is a prime.

It is a super-2 number, since 2×20320103331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20320103339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102626686 + ... + 102626883.

It is an arithmetic number, because the mean of its divisors is an integer number (2668296410).

Almost surely, 2^20320103331 is an apocalyptic number.

20320103331 is a deficient number, since it is larger than the sum of its proper divisors (11699453589).

20320103331 is a wasteful number, since it uses less digits than its factorization.

20320103331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205253586 (or 205253583 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20320103331 its reverse (13330102302), we get a palindrome (33650205633).

The spelling of 20320103331 in words is "twenty billion, three hundred twenty million, one hundred three thousand, three hundred thirty-one".