204534240311 has 4 divisors (see below), whose sum is σ = 213427033392. Its totient is φ = 195641447232.

The previous prime is 204534240307. The next prime is 204534240329. The reversal of 204534240311 is 113042435402.

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 204534240311 - 2² = 204534240307 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 (204534243311) 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, 4446396506 + ... + 4446396551.

It is an arithmetic number, because the mean of its divisors is an integer number (53356758348).

Almost surely, 2^204534240311 is an apocalyptic number.

204534240311 is a deficient number, since it is larger than the sum of its proper divisors (8892793081).

204534240311 is an equidigital number, since it uses as much as digits as its factorization.

204534240311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8892793080.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 204534240311 its reverse (113042435402), we get a palindrome (317576675713).

The spelling of 204534240311 in words is "two hundred four billion, five hundred thirty-four million, two hundred forty thousand, three hundred eleven".