204523145311 has 4 divisors (see below), whose sum is σ = 215287521400. Its totient is φ = 193758769224.

The previous prime is 204523145287. The next prime is 204523145329. The reversal of 204523145311 is 113541325402.

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 204523145311 - 2⁹ = 204523144799 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 (204523145381) 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, 5382188016 + ... + 5382188053.

It is an arithmetic number, because the mean of its divisors is an integer number (53821880350).

Almost surely, 2^204523145311 is an apocalyptic number.

204523145311 is a deficient number, since it is larger than the sum of its proper divisors (10764376089).

204523145311 is a wasteful number, since it uses less digits than its factorization.

204523145311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10764376088.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 204523145311 in words is "two hundred four billion, five hundred twenty-three million, one hundred forty-five thousand, three hundred eleven".