2103431530313 has 4 divisors (see below), whose sum is σ = 2227162796820. Its totient is φ = 1979700263808.

The previous prime is 2103431530297. The next prime is 2103431530349. The reversal of 2103431530313 is 3130351343012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1614099102784 + 489332427529 = 1270472^2 + 699523^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103431530313 - 2⁴ = 2103431530297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103431530513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61865633228 + ... + 61865633261.

It is an arithmetic number, because the mean of its divisors is an integer number (556790699205).

Almost surely, 2^{2103431530313} is an apocalyptic number.

It is an amenable number.

2103431530313 is a deficient number, since it is larger than the sum of its proper divisors (123731266507).

2103431530313 is a wasteful number, since it uses less digits than its factorization.

2103431530313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123731266506.

The product of its (nonzero) digits is 9720, while the sum is 29.

Adding to 2103431530313 its reverse (3130351343012), we get a palindrome (5233782873325).

The spelling of 2103431530313 in words is "two trillion, one hundred three billion, four hundred thirty-one million, five hundred thirty thousand, three hundred thirteen".