202143304231 has 4 divisors (see below), whose sum is σ = 220519968264. Its totient is φ = 183766640200.

The previous prime is 202143304193. The next prime is 202143304261. The reversal of 202143304231 is 132403341202.

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

It is not a de Polignac number, because 202143304231 - 2²⁵ = 202109749799 is a prime.

It is a super-2 number, since 2×202143304231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202143304196 and 202143304205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202143304261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9188332000 + ... + 9188332021.

It is an arithmetic number, because the mean of its divisors is an integer number (55129992066).

Almost surely, 2^202143304231 is an apocalyptic number.

202143304231 is a deficient number, since it is larger than the sum of its proper divisors (18376664033).

202143304231 is a wasteful number, since it uses less digits than its factorization.

202143304231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18376664032.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 202143304231 its reverse (132403341202), we get a palindrome (334546645433).

The spelling of 202143304231 in words is "two hundred two billion, one hundred forty-three million, three hundred four thousand, two hundred thirty-one".