204310351034521 has 4 divisors (see below), whose sum is σ = 207187961612544. Its totient is φ = 201432740456500.

The previous prime is 204310351034479. The next prime is 204310351034549. The reversal of 204310351034521 is 125430153013402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 204310351034521 - 2³¹ = 204308203550873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204310351034551) 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, 1438805288905 + ... + 1438805289046.

It is an arithmetic number, because the mean of its divisors is an integer number (51796990403136).

Almost surely, 2^{204310351034521} is an apocalyptic number.

It is an amenable number.

204310351034521 is a deficient number, since it is larger than the sum of its proper divisors (2877610578023).

204310351034521 is an equidigital number, since it uses as much as digits as its factorization.

204310351034521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877610578022.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 204310351034521 in words is "two hundred four trillion, three hundred ten billion, three hundred fifty-one million, thirty-four thousand, five hundred twenty-one".