103123400020 has 24 divisors (see below), whose sum is σ = 217768975200. Its totient is φ = 41018915232.

The previous prime is 103123399991. The next prime is 103123400033. The reversal of 103123400020 is 20004321301.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 103123399967 and 103123400003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14399130 + ... + 14406289.

It is an arithmetic number, because the mean of its divisors is an integer number (9073707300).

Almost surely, 2^103123400020 is an apocalyptic number.

103123400020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103123400020 is an abundant number, since it is smaller than the sum of its proper divisors (114645575180).

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

103123400020 is a wasteful number, since it uses less digits than its factorization.

103123400020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28805607 (or 28805605 counting only the distinct ones).

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

Adding to 103123400020 its reverse (20004321301), we get a palindrome (123127721321).

The spelling of 103123400020 in words is "one hundred three billion, one hundred twenty-three million, four hundred thousand, twenty".