2321312004 has 72 divisors (see below), whose sum is σ = 6738120480. Its totient is φ = 666403200.

The previous prime is 2321311933. The next prime is 2321312011. The reversal of 2321312004 is 4002131232.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146737 + ... + 161784.

Almost surely, 2^2321312004 is an apocalyptic number.

It is an amenable number.

2321312004 is an abundant number, since it is smaller than the sum of its proper divisors (4416808476).

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

2321312004 is a wasteful number, since it uses less digits than its factorization.

2321312004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308561 (or 308556 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2321312004 is about 48179.9958904108. The cubic root of 2321312004 is about 1324.0706912417.

Adding to 2321312004 its reverse (4002131232), we get a palindrome (6323443236).

The spelling of 2321312004 in words is "two billion, three hundred twenty-one million, three hundred twelve thousand, four".