2321044640 has 48 divisors (see below), whose sum is σ = 5537798280. Its totient is φ = 919219200.

The previous prime is 2321044637. The next prime is 2321044643. The reversal of 2321044640 is 464401232.

It is an interprime number because it is at equal distance from previous prime (2321044637) and next prime (2321044643).

It can be written as a sum of positive squares in 4 ways, for example, as 2315149456 + 5895184 = 48116^2 + 2428^2 .

It is not an unprimeable number, because it can be changed into a prime (2321044643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55655 + ... + 87974.

Almost surely, 2^2321044640 is an apocalyptic number.

2321044640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2321044640 is an abundant number, since it is smaller than the sum of its proper divisors (3216753640).

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

2321044640 is a wasteful number, since it uses less digits than its factorization.

2321044640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143745 (or 143737 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2321044640 is about 48177.2211734965. The cubic root of 2321044640 is about 1324.0198546993.

Adding to 2321044640 its reverse (464401232), we get a palindrome (2785445872).

The spelling of 2321044640 in words is "two billion, three hundred twenty-one million, forty-four thousand, six hundred forty".