20330123331 has 16 divisors (see below), whose sum is σ = 30995888384. Its totient is φ = 11610968544.

The previous prime is 20330123323. The next prime is 20330123339. The reversal of 20330123331 is 13332103302.

It is an interprime number because it is at equal distance from previous prime (20330123323) and next prime (20330123339).

It is not a de Polignac number, because 20330123331 - 2³ = 20330123323 is a prime.

It is a super-2 number, since 2×20330123331² (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 Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20330123298 and 20330123307.

It is not an unprimeable number, because it can be changed into a prime (20330123339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220060 + ... + 298473.

It is an arithmetic number, because the mean of its divisors is an integer number (1937243024).

Almost surely, 2^20330123331 is an apocalyptic number.

20330123331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20330123331 is a deficient number, since it is larger than the sum of its proper divisors (10665765053).

20330123331 is a wasteful number, since it uses less digits than its factorization.

20330123331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520410.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20330123331 its reverse (13332103302), we get a palindrome (33662226633).

The spelling of 20330123331 in words is "twenty billion, three hundred thirty million, one hundred twenty-three thousand, three hundred thirty-one".