103105400020 has 48 divisors (see below), whose sum is σ = 250842751488. Its totient is φ = 34866167040.

The previous prime is 103105399987. The next prime is 103105400033. The reversal of 103105400020 is 20004501301.

It is a junction number, because it is equal to n+sod(n) for n = 103105399967 and 103105400003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5034076 + ... + 5054515.

It is an arithmetic number, because the mean of its divisors is an integer number (5225890656).

Almost surely, 2^103105400020 is an apocalyptic number.

103105400020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103105400020 is an abundant number, since it is smaller than the sum of its proper divisors (147737351468).

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

103105400020 is a wasteful number, since it uses less digits than its factorization.

103105400020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10088680 (or 10088678 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 103105400020 its reverse (20004501301), we get a palindrome (123109901321).

The spelling of 103105400020 in words is "one hundred three billion, one hundred five million, four hundred thousand, twenty".