103131212020 has 48 divisors (see below), whose sum is σ = 228852610560. Its totient is φ = 38959405056.

The previous prime is 103131211999. The next prime is 103131212047. The reversal of 103131212020 is 20212131301.

It is a junction number, because it is equal to n+sod(n) for n = 103131211985 and 103131212003.

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, 1382637 + ... + 1455316.

It is an arithmetic number, because the mean of its divisors is an integer number (4767762720).

Almost surely, 2^103131212020 is an apocalyptic number.

103131212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103131212020 is an abundant number, since it is smaller than the sum of its proper divisors (125721398540).

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

103131212020 is a wasteful number, since it uses less digits than its factorization.

103131212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838064 (or 2838062 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 103131212020 its reverse (20212131301), we get a palindrome (123343343321).

The spelling of 103131212020 in words is "one hundred three billion, one hundred thirty-one million, two hundred twelve thousand, twenty".