202131230243 has 4 divisors (see below), whose sum is σ = 202135349640. Its totient is φ = 202127110848.

The previous prime is 202131230233. The next prime is 202131230261. The reversal of 202131230243 is 342032131202.

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

It is a cyclic number.

It is not a de Polignac number, because 202131230243 - 2¹² = 202131226147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202131230233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1985198 + ... + 2084531.

It is an arithmetic number, because the mean of its divisors is an integer number (50533837410).

Almost surely, 2^202131230243 is an apocalyptic number.

202131230243 is a deficient number, since it is larger than the sum of its proper divisors (4119397).

202131230243 is an equidigital number, since it uses as much as digits as its factorization.

202131230243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119396.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 202131230243 its reverse (342032131202), we get a palindrome (544163361445).

The spelling of 202131230243 in words is "two hundred two billion, one hundred thirty-one million, two hundred thirty thousand, two hundred forty-three".