2103203131 has 4 divisors (see below), whose sum is σ = 2111022000. Its totient is φ = 2095384264.

The previous prime is 2103203101. The next prime is 2103203147. The reversal of 2103203131 is 1313023012.

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

It is a cyclic number.

It is not a de Polignac number, because 2103203131 - 2¹¹ = 2103201083 is a prime.

It is a super-2 number, since 2×2103203131² = 8846926820496406322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103203101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3909031 + ... + 3909568.

It is an arithmetic number, because the mean of its divisors is an integer number (527755500).

Almost surely, 2^2103203131 is an apocalyptic number.

2103203131 is a deficient number, since it is larger than the sum of its proper divisors (7818869).

2103203131 is an equidigital number, since it uses as much as digits as its factorization.

2103203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7818868.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2103203131 is about 45860.6926572201. The cubic root of 2103203131 is about 1281.2299235688.

Adding to 2103203131 its reverse (1313023012), we get a palindrome (3416226143).

The spelling of 2103203131 in words is "two billion, one hundred three million, two hundred three thousand, one hundred thirty-one".