20322312031 has 4 divisors (see below), whose sum is σ = 23225499472. Its totient is φ = 17419124592.

The previous prime is 20322312019. The next prime is 20322312041. The reversal of 20322312031 is 13021322302.

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 20322312031 - 2²³ = 20313923423 is a prime.

It is a super-2 number, since 2×20322312031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322312041) 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, 1451593710 + ... + 1451593723.

It is an arithmetic number, because the mean of its divisors is an integer number (5806374868).

Almost surely, 2^20322312031 is an apocalyptic number.

20322312031 is a deficient number, since it is larger than the sum of its proper divisors (2903187441).

20322312031 is an equidigital number, since it uses as much as digits as its factorization.

20322312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903187440.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20322312031 its reverse (13021322302), we get a palindrome (33343634333).

The spelling of 20322312031 in words is "twenty billion, three hundred twenty-two million, three hundred twelve thousand, thirty-one".