204240503321 has 8 divisors (see below), whose sum is σ = 210493815840. Its totient is φ = 198055533312.

The previous prime is 204240503273. The next prime is 204240503339. The reversal of 204240503321 is 123305042402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204240503321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204240503521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17079560 + ... + 17091513.

It is an arithmetic number, because the mean of its divisors is an integer number (26311726980).

Almost surely, 2^204240503321 is an apocalyptic number.

It is an amenable number.

204240503321 is a deficient number, since it is larger than the sum of its proper divisors (6253312519).

204240503321 is a wasteful number, since it uses less digits than its factorization.

204240503321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34171255.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 204240503321 its reverse (123305042402), we get a palindrome (327545545723).

The spelling of 204240503321 in words is "two hundred four billion, two hundred forty million, five hundred three thousand, three hundred twenty-one".