20322320031 has 24 divisors (see below), whose sum is σ = 31692198720. Its totient is φ = 12474513216.

The previous prime is 20322320021. The next prime is 20322320069. The reversal of 20322320031 is 13002322302.

It is a happy number.

20322320031 is a `hidden beast` number, since 20 + 322 + 320 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 20322320031 - 2²⁷ = 20188102303 is a prime.

It is a super-2 number, since 2×20322320031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20322319986 and 20322320013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322320021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172311 + ... + 265208.

It is an arithmetic number, because the mean of its divisors is an integer number (1320508280).

Almost surely, 2^20322320031 is an apocalyptic number.

20322320031 is a deficient number, since it is larger than the sum of its proper divisors (11369878689).

20322320031 is a wasteful number, since it uses less digits than its factorization.

20322320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437935 (or 437932 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20322320031 its reverse (13002322302), we get a palindrome (33324642333).

The spelling of 20322320031 in words is "twenty billion, three hundred twenty-two million, three hundred twenty thousand, thirty-one".