203011131203 has 4 divisors (see below), whose sum is σ = 203012162040. Its totient is φ = 203010100368.

The previous prime is 203011131139. The next prime is 203011131209. The reversal of 203011131203 is 302131110302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203011131203 - 2⁶ = 203011131139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203011131209) 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, 117725 + ... + 647982.

It is an arithmetic number, because the mean of its divisors is an integer number (50753040510).

Almost surely, 2^203011131203 is an apocalyptic number.

203011131203 is a deficient number, since it is larger than the sum of its proper divisors (1030837).

203011131203 is an equidigital number, since it uses as much as digits as its factorization.

203011131203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030836.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 203011131203 its reverse (302131110302), we get a palindrome (505142241505).

The spelling of 203011131203 in words is "two hundred three billion, eleven million, one hundred thirty-one thousand, two hundred three".