2103431012 has 18 divisors (see below), whose sum is σ = 3910273122. Its totient is φ = 989849344.

The previous prime is 2103430991. The next prime is 2103431017. The reversal of 2103431012 is 2101343012.

It can be written as a sum of positive squares in 3 ways, for example, as 782544676 + 1320886336 = 27974^2 + 36344^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103431017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 908633 + ... + 910944.

Almost surely, 2^2103431012 is an apocalyptic number.

It is an amenable number.

2103431012 is a deficient number, since it is larger than the sum of its proper divisors (1806842110).

2103431012 is a wasteful number, since it uses less digits than its factorization.

2103431012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819615 (or 1819596 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2103431012 is about 45863.1770814016. The cubic root of 2103431012 is about 1281.2761954367.

Adding to 2103431012 its reverse (2101343012), we get a palindrome (4204774024).

The spelling of 2103431012 in words is "two billion, one hundred three million, four hundred thirty-one thousand, twelve".