20322111331 has 4 divisors (see below), whose sum is σ = 20366194464. Its totient is φ = 20278028200.

The previous prime is 20322111283. The next prime is 20322111343. The reversal of 20322111331 is 13311122302.

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 20322111331 - 2⁷ = 20322111203 is a prime.

It is a super-2 number, since 2×20322111331² (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 = 20322111299 and 20322111308.

It is not an unprimeable number, because it can be changed into a prime (20322111431) 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, 22040875 + ... + 22041796.

It is an arithmetic number, because the mean of its divisors is an integer number (5091548616).

Almost surely, 2^20322111331 is an apocalyptic number.

20322111331 is a deficient number, since it is larger than the sum of its proper divisors (44083133).

20322111331 is an equidigital number, since it uses as much as digits as its factorization.

20322111331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44083132.

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

Adding to 20322111331 its reverse (13311122302), we get a palindrome (33633233633).

The spelling of 20322111331 in words is "twenty billion, three hundred twenty-two million, one hundred eleven thousand, three hundred thirty-one".