321213253244 has 12 divisors (see below), whose sum is σ = 605363438904. Its totient is φ = 148252270704.

The previous prime is 321213253241. The next prime is 321213253261. The reversal of 321213253244 is 442352312123.

It is a self number, because there is not a number n which added to its sum of digits gives 321213253244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321213253241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3088588922 + ... + 3088589025.

It is an arithmetic number, because the mean of its divisors is an integer number (50446953242).

Almost surely, 2^321213253244 is an apocalyptic number.

It is an amenable number.

321213253244 is a deficient number, since it is larger than the sum of its proper divisors (284150185660).

321213253244 is a wasteful number, since it uses less digits than its factorization.

321213253244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6177177964 (or 6177177962 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

Adding to 321213253244 its reverse (442352312123), we get a palindrome (763565565367).

The spelling of 321213253244 in words is "three hundred twenty-one billion, two hundred thirteen million, two hundred fifty-three thousand, two hundred forty-four".