203130023 has 4 divisors (see below), whose sum is σ = 204729600. Its totient is φ = 201530448.

The previous prime is 203129999. The next prime is 203130029. The reversal of 203130023 is 320031302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320031302 = 2 ⋅160015651.

It is a cyclic number.

It is not a de Polignac number, because 203130023 - 2¹⁸ = 202867879 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 (203130029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799598 + ... + 799851.

It is an arithmetic number, because the mean of its divisors is an integer number (51182400).

Almost surely, 2^203130023 is an apocalyptic number.

203130023 is a deficient number, since it is larger than the sum of its proper divisors (1599577).

203130023 is a wasteful number, since it uses less digits than its factorization.

203130023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599576.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 203130023 is about 14252.3690311471. The cubic root of 203130023 is about 587.8385173278.

Adding to 203130023 its reverse (320031302), we get a palindrome (523161325).

The spelling of 203130023 in words is "two hundred three million, one hundred thirty thousand, twenty-three".