20311330222131 has 32 divisors (see below), whose sum is σ = 29786084536320. Its totient is φ = 12233105579904.

The previous prime is 20311330222129. The next prime is 20311330222283. The reversal of 20311330222131 is 13122203311302.

It is not a de Polignac number, because 20311330222131 - 2¹ = 20311330222129 is a prime.

It is a super-2 number, since 2×20311330222131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20311330222111) 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 31 ways as a sum of consecutive naturals, for example, 192729430 + ... + 192834788.

It is an arithmetic number, because the mean of its divisors is an integer number (930815141760).

Almost surely, 2^{20311330222131} is an apocalyptic number.

20311330222131 is a deficient number, since it is larger than the sum of its proper divisors (9474754314189).

20311330222131 is a wasteful number, since it uses less digits than its factorization.

20311330222131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210595.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20311330222131 its reverse (13122203311302), we get a palindrome (33433533533433).

The spelling of 20311330222131 in words is "twenty trillion, three hundred eleven billion, three hundred thirty million, two hundred twenty-two thousand, one hundred thirty-one".