20331123032 has 64 divisors (see below), whose sum is σ = 43438636800. Its totient is φ = 8836007040.

The previous prime is 20331123023. The next prime is 20331123067. The reversal of 20331123032 is 23032113302.

It is a junction number, because it is equal to n+sod(n) for n = 20331122995 and 20331123013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224183 + ... + 301529.

It is an arithmetic number, because the mean of its divisors is an integer number (678728700).

Almost surely, 2^20331123032 is an apocalyptic number.

20331123032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20331123032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21719318400).

20331123032 is an abundant number, since it is smaller than the sum of its proper divisors (23107513768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20331123032 is a wasteful number, since it uses less digits than its factorization.

20331123032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77496 (or 77492 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20331123032 its reverse (23032113302), we get a palindrome (43363236334).

The spelling of 20331123032 in words is "twenty billion, three hundred thirty-one million, one hundred twenty-three thousand, thirty-two".