204320140231 has 4 divisors (see below), whose sum is σ = 206906471200. Its totient is φ = 201733809264.

The previous prime is 204320140223. The next prime is 204320140249. The reversal of 204320140231 is 132041023402.

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 204320140231 - 2³ = 204320140223 is a prime.

It is a super-2 number, since 2×204320140231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204320140831) 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, 1293165366 + ... + 1293165523.

It is an arithmetic number, because the mean of its divisors is an integer number (51726617800).

Almost surely, 2^204320140231 is an apocalyptic number.

204320140231 is a deficient number, since it is larger than the sum of its proper divisors (2586330969).

204320140231 is an equidigital number, since it uses as much as digits as its factorization.

204320140231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586330968.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 204320140231 its reverse (132041023402), we get a palindrome (336361163633).

The spelling of 204320140231 in words is "two hundred four billion, three hundred twenty million, one hundred forty thousand, two hundred thirty-one".