123203030020 has 96 divisors (see below), whose sum is σ = 317369864448. Its totient is φ = 39211610112.

The previous prime is 123203029997. The next prime is 123203030023. The reversal of 123203030020 is 20030302321.

It is a super-2 number, since 2×123203030020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123203029976 and 123203030003.

It is not an unprimeable number, because it can be changed into a prime (123203030023) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 180822 + ... + 528301.

It is an arithmetic number, because the mean of its divisors is an integer number (3305936088).

Almost surely, 2^123203030020 is an apocalyptic number.

123203030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123203030020 is an abundant number, since it is smaller than the sum of its proper divisors (194166834428).

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

123203030020 is a wasteful number, since it uses less digits than its factorization.

123203030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709229 (or 709227 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 123203030020 its reverse (20030302321), we get a palindrome (143233332341).

The spelling of 123203030020 in words is "one hundred twenty-three billion, two hundred three million, thirty thousand, twenty".