2103431020 has 24 divisors (see below), whose sum is σ = 4418290800. Its totient is φ = 841165632.

The previous prime is 2103431017. The next prime is 2103431039. The reversal of 2103431020 is 201343012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2103430985 and 2103431003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90786 + ... + 111574.

It is an arithmetic number, because the mean of its divisors is an integer number (184095450).

Almost surely, 2^2103431020 is an apocalyptic number.

2103431020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103431020 is an abundant number, since it is smaller than the sum of its proper divisors (2314859780).

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

2103431020 is a wasteful number, since it uses less digits than its factorization.

2103431020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25857 (or 25855 counting only the distinct ones).

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

The square root of 2103431020 is about 45863.1771686175. The cubic root of 2103431020 is about 1281.2761970610.

Adding to 2103431020 its reverse (201343012), we get a palindrome (2304774032).

The spelling of 2103431020 in words is "two billion, one hundred three million, four hundred thirty-one thousand, twenty".