2143321504 has 12 divisors (see below), whose sum is σ = 4219664274. Its totient is φ = 1071660736.

The previous prime is 2143321501. The next prime is 2143321507. The reversal of 2143321504 is 4051233412.

It is an interprime number because it is at equal distance from previous prime (2143321501) and next prime (2143321507).

It can be written as a sum of positive squares in only one way, i.e., 2136288400 + 7033104 = 46220^2 + 2652^2 .

It is not an unprimeable number, because it can be changed into a prime (2143321501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33489367 + ... + 33489430.

Almost surely, 2^2143321504 is an apocalyptic number.

It is an amenable number.

2143321504 is a deficient number, since it is larger than the sum of its proper divisors (2076342770).

2143321504 is an equidigital number, since it uses as much as digits as its factorization.

2143321504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66978807 (or 66978799 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2143321504 is about 46296.0203905260. The cubic root of 2143321504 is about 1289.3251089894.

Adding to 2143321504 its reverse (4051233412), we get a palindrome (6194554916).

The spelling of 2143321504 in words is "two billion, one hundred forty-three million, three hundred twenty-one thousand, five hundred four".