20322330231 has 32 divisors (see below), whose sum is σ = 32030788608. Its totient is φ = 11219477760.

The previous prime is 20322330227. The next prime is 20322330239. The reversal of 20322330231 is 13203322302.

It is not a de Polignac number, because 20322330231 - 2² = 20322330227 is a prime.

It is a super-2 number, since 2×20322330231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20322330198 and 20322330207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322330239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25896 + ... + 203261.

It is an arithmetic number, because the mean of its divisors is an integer number (1000962144).

Almost surely, 2^20322330231 is an apocalyptic number.

20322330231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20322330231 is a deficient number, since it is larger than the sum of its proper divisors (11708458377).

20322330231 is a wasteful number, since it uses less digits than its factorization.

20322330231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229311.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20322330231 its reverse (13203322302), we get a palindrome (33525652533).

The spelling of 20322330231 in words is "twenty billion, three hundred twenty-two million, three hundred thirty thousand, two hundred thirty-one".