20322332331 has 16 divisors (see below), whose sum is σ = 31429565184. Its totient is φ = 11439435744.

The previous prime is 20322332309. The next prime is 20322332339. The reversal of 20322332331 is 13323322302.

It is not a de Polignac number, because 20322332331 - 2⁶ = 20322332267 is a prime.

It is a super-2 number, since 2×20322332331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20322332339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7220460 + ... + 7223273.

It is an arithmetic number, because the mean of its divisors is an integer number (1964347824).

Almost surely, 2^20322332331 is an apocalyptic number.

20322332331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20322332331 is a deficient number, since it is larger than the sum of its proper divisors (11107232853).

20322332331 is a wasteful number, since it uses less digits than its factorization.

20322332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14443810.

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 20322332331 its reverse (13323322302), we get a palindrome (33645654633).

The spelling of 20322332331 in words is "twenty billion, three hundred twenty-two million, three hundred thirty-two thousand, three hundred thirty-one".