203122310020 has 48 divisors (see below), whose sum is σ = 490765363200. Its totient is φ = 69174532224.

The previous prime is 203122309991. The next prime is 203122310021. The reversal of 203122310020 is 20013221302.

It is a junction number, because it is equal to n+sod(n) for n = 203122309976 and 203122310003.

It is not an unprimeable number, because it can be changed into a prime (203122310021) 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, 4847844 + ... + 4889563.

It is an arithmetic number, because the mean of its divisors is an integer number (10224278400).

Almost surely, 2^203122310020 is an apocalyptic number.

203122310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203122310020 is an abundant number, since it is smaller than the sum of its proper divisors (287643053180).

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

203122310020 is a wasteful number, since it uses less digits than its factorization.

203122310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9737572 (or 9737570 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 203122310020 its reverse (20013221302), we get a palindrome (223135531322).

It can be divided in two parts, 20312 and 2310020, that added together give a palindrome (2330332).

The spelling of 203122310020 in words is "two hundred three billion, one hundred twenty-two million, three hundred ten thousand, twenty".