20113302231 has 48 divisors (see below), whose sum is σ = 33600473088. Its totient is φ = 11477764800.

The previous prime is 20113302199. The next prime is 20113302233. The reversal of 20113302231 is 13220331102.

20113302231 is a `hidden beast` number, since 20 + 113 + 302 + 231 = 666.

It is not a de Polignac number, because 20113302231 - 2⁵ = 20113302199 is a prime.

It is a super-2 number, since 2×20113302231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113302233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24990 + ... + 202116.

It is an arithmetic number, because the mean of its divisors is an integer number (700009856).

Almost surely, 2^20113302231 is an apocalyptic number.

20113302231 is a deficient number, since it is larger than the sum of its proper divisors (13487170857).

20113302231 is a wasteful number, since it uses less digits than its factorization.

20113302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177212 (or 177209 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20113302231 its reverse (13220331102), we get a palindrome (33333633333).

It can be divided in two parts, 2011330 and 2231, that added together give a square (2013561 = 1419²).

The spelling of 20113302231 in words is "twenty billion, one hundred thirteen million, three hundred two thousand, two hundred thirty-one".