21032314144 has 12 divisors (see below), whose sum is σ = 41407368534. Its totient is φ = 10516157056.

The previous prime is 21032314141. The next prime is 21032314169. The reversal of 21032314144 is 44141323012.

It can be written as a sum of positive squares in only one way, i.e., 20912630544 + 119683600 = 144612^2 + 10940^2 .

It is not an unprimeable number, because it can be changed into a prime (21032314141) 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, 328629877 + ... + 328629940.

Almost surely, 2^21032314144 is an apocalyptic number.

It is an amenable number.

21032314144 is a deficient number, since it is larger than the sum of its proper divisors (20375054390).

21032314144 is an equidigital number, since it uses as much as digits as its factorization.

21032314144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657259827 (or 657259819 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21032314144 its reverse (44141323012), we get a palindrome (65173637156).

The spelling of 21032314144 in words is "twenty-one billion, thirty-two million, three hundred fourteen thousand, one hundred forty-four".