321312034003220 has 144 divisors (see below), whose sum is σ = 776157659101440. Its totient is φ = 111040019672832.

The previous prime is 321312034003199. The next prime is 321312034003249. The reversal of 321312034003220 is 22300430213123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 321312034003220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12831980 + ... + 28412739.

It is an arithmetic number, because the mean of its divisors is an integer number (5389983743760).

Almost surely, 2^{321312034003220} is an apocalyptic number.

It is an amenable number.

321312034003220 is an abundant number, since it is smaller than the sum of its proper divisors (454845625098220).

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

321312034003220 is a wasteful number, since it uses less digits than its factorization.

321312034003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41244862 (or 41244841 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 321312034003220 its reverse (22300430213123), we get a palindrome (343612464216343).

The spelling of 321312034003220 in words is "three hundred twenty-one trillion, three hundred twelve billion, thirty-four million, three thousand, two hundred twenty".