2321204004 has 72 divisors (see below), whose sum is σ = 7100166528. Its totient is φ = 624188160.

The previous prime is 2321204003. The next prime is 2321204029. The reversal of 2321204004 is 4004021232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2321204003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266632 + ... + 275199.

It is an arithmetic number, because the mean of its divisors is an integer number (98613424).

Almost surely, 2^2321204004 is an apocalyptic number.

It is an amenable number.

2321204004 is an abundant number, since it is smaller than the sum of its proper divisors (4778962524).

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

2321204004 is a wasteful number, since it uses less digits than its factorization.

2321204004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541865 (or 541860 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2321204004 is about 48178.8750802673. The cubic root of 2321204004 is about 1324.0501566113.

Adding to 2321204004 its reverse (4004021232), we get a palindrome (6325225236).

The spelling of 2321204004 in words is "two billion, three hundred twenty-one million, two hundred four thousand, four".