20322311131 has 4 divisors (see below), whose sum is σ = 20378919600. Its totient is φ = 20265702664.

The previous prime is 20322311117. The next prime is 20322311147. The reversal of 20322311131 is 13111322302.

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 20322311131 - 2¹¹ = 20322309083 is a prime.

It is a super-2 number, since 2×20322311131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20322311099 and 20322311108.

It is not an unprimeable number, because it can be changed into a prime (20322311171) 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 3 ways as a sum of consecutive naturals, for example, 28303696 + ... + 28304413.

It is an arithmetic number, because the mean of its divisors is an integer number (5094729900).

Almost surely, 2^20322311131 is an apocalyptic number.

20322311131 is a deficient number, since it is larger than the sum of its proper divisors (56608469).

20322311131 is an equidigital number, since it uses as much as digits as its factorization.

20322311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56608468.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20322311131 its reverse (13111322302), we get a palindrome (33433633433).

The spelling of 20322311131 in words is "twenty billion, three hundred twenty-two million, three hundred eleven thousand, one hundred thirty-one".