123003103020 has 96 divisors (see below), whose sum is σ = 395001159168. Its totient is φ = 28015621632.

The previous prime is 123003103007. The next prime is 123003103021. The reversal of 123003103020 is 20301300321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (123003103021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 398569 + ... + 636288.

It is an arithmetic number, because the mean of its divisors is an integer number (4114595408).

Almost surely, 2^123003103020 is an apocalyptic number.

123003103020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123003103020 is an abundant number, since it is smaller than the sum of its proper divisors (271998056148).

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

123003103020 is a wasteful number, since it uses less digits than its factorization.

123003103020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035159 (or 1035157 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 123003103020 its reverse (20301300321), we get a palindrome (143304403341).

The spelling of 123003103020 in words is "one hundred twenty-three billion, three million, one hundred three thousand, twenty".