203130040303 has 4 divisors (see below), whose sum is σ = 203131836328. Its totient is φ = 203128244280.

The previous prime is 203130040291. The next prime is 203130040331. The reversal of 203130040303 is 303040031302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203130040303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203100040303) 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, 716076 + ... + 958657.

It is an arithmetic number, because the mean of its divisors is an integer number (50782959082).

Almost surely, 2^203130040303 is an apocalyptic number.

203130040303 is a deficient number, since it is larger than the sum of its proper divisors (1796025).

203130040303 is a wasteful number, since it uses less digits than its factorization.

203130040303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796024.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 203130040303 its reverse (303040031302), we get a palindrome (506170071605).

Subtracting 203130040303 from its reverse (303040031302), we obtain a palindrome (99909990999).

The spelling of 203130040303 in words is "two hundred three billion, one hundred thirty million, forty thousand, three hundred three".