204311311624 has 48 divisors (see below), whose sum is σ = 446226721920. Its totient is φ = 85909811520.

The previous prime is 204311311579. The next prime is 204311311657. The reversal of 204311311624 is 426113113402.

204311311624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×204311311624² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 204311311592 and 204311311601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 492112 + ... + 806719.

It is an arithmetic number, because the mean of its divisors is an integer number (9296390040).

Almost surely, 2^204311311624 is an apocalyptic number.

It is an amenable number.

204311311624 is an abundant number, since it is smaller than the sum of its proper divisors (241915410296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204311311624 is a wasteful number, since it uses less digits than its factorization.

204311311624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298950 (or 1298893 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 204311311624 in words is "two hundred four billion, three hundred eleven million, three hundred eleven thousand, six hundred twenty-four".