203130312303 has 16 divisors (see below), whose sum is σ = 271719290880. Its totient is φ = 134981054976.

The previous prime is 203130312271. The next prime is 203130312337. The reversal of 203130312303 is 303213031302.

It is not a de Polignac number, because 203130312303 - 2⁵ = 203130312271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203130312303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203130312373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2963151 + ... + 3030927.

It is an arithmetic number, because the mean of its divisors is an integer number (16982455680).

Almost surely, 2^203130312303 is an apocalyptic number.

203130312303 is a deficient number, since it is larger than the sum of its proper divisors (68588978577).

203130312303 is a wasteful number, since it uses less digits than its factorization.

203130312303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71006.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 203130312303 its reverse (303213031302), we get a palindrome (506343343605).

The spelling of 203130312303 in words is "two hundred three billion, one hundred thirty million, three hundred twelve thousand, three hundred three".