321140252444 has 96 divisors (see below), whose sum is σ = 642187671552. Its totient is φ = 139239936000.

The previous prime is 321140252441. The next prime is 321140252539. The reversal of 321140252444 is 444252041123.

It is a self number, because there is not a number n which added to its sum of digits gives 321140252444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321140252441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14512949 + ... + 14535059.

It is an arithmetic number, because the mean of its divisors is an integer number (6689454912).

Almost surely, 2^321140252444 is an apocalyptic number.

It is an amenable number.

321140252444 is a deficient number, since it is larger than the sum of its proper divisors (321047419108).

321140252444 is a wasteful number, since it uses less digits than its factorization.

321140252444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22347 (or 22345 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 321140252444 its reverse (444252041123), we get a palindrome (765392293567).

The spelling of 321140252444 in words is "three hundred twenty-one billion, one hundred forty million, two hundred fifty-two thousand, four hundred forty-four".