20020320031 has 8 divisors (see below), whose sum is σ = 20893188960. Its totient is φ = 19147652832.

The previous prime is 20020320013. The next prime is 20020320037. The reversal of 20020320031 is 13002302002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20020320031 - 2⁷ = 20020319903 is a prime.

It is a super-2 number, since 2×20020320031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20020319993 and 20020320020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020320037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173605 + ... + 264913.

It is an arithmetic number, because the mean of its divisors is an integer number (2611648620).

Almost surely, 2^20020320031 is an apocalyptic number.

20020320031 is a deficient number, since it is larger than the sum of its proper divisors (872868929).

20020320031 is an equidigital number, since it uses as much as digits as its factorization.

20020320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100865.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20020320031 its reverse (13002302002), we get a palindrome (33022622033).

The spelling of 20020320031 in words is "twenty billion, twenty million, three hundred twenty thousand, thirty-one".