20331120031 has 8 divisors (see below), whose sum is σ = 21405743600. Its totient is φ = 19256952960.

The previous prime is 20331120001. The next prime is 20331120083. The reversal of 20331120031 is 13002113302.

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

It is not a de Polignac number, because 20331120031 - 2¹³ = 20331111839 is a prime.

It is a super-2 number, since 2×20331120031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331119987 and 20331120014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331120001) 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, 20730 + ... + 202711.

It is an arithmetic number, because the mean of its divisors is an integer number (2675717950).

Almost surely, 2^20331120031 is an apocalyptic number.

20331120031 is a deficient number, since it is larger than the sum of its proper divisors (1074623569).

20331120031 is a wasteful number, since it uses less digits than its factorization.

20331120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228249.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20331120031 its reverse (13002113302), we get a palindrome (33333233333).

The spelling of 20331120031 in words is "twenty billion, three hundred thirty-one million, one hundred twenty thousand, thirty-one".