203131330023 has 4 divisors (see below), whose sum is σ = 270841773368. Its totient is φ = 135420886680.

The previous prime is 203131330021. The next prime is 203131330063. The reversal of 203131330023 is 320033131302.

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

It is not a de Polignac number, because 203131330023 - 2¹ = 203131330021 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 (203131330021) 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, 33855221668 + ... + 33855221673.

It is an arithmetic number, because the mean of its divisors is an integer number (67710443342).

Almost surely, 2^203131330023 is an apocalyptic number.

203131330023 is a deficient number, since it is larger than the sum of its proper divisors (67710443345).

203131330023 is an equidigital number, since it uses as much as digits as its factorization.

203131330023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67710443344.

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

Adding to 203131330023 its reverse (320033131302), we get a palindrome (523164461325).

The spelling of 203131330023 in words is "two hundred three billion, one hundred thirty-one million, three hundred thirty thousand, twenty-three".