321302131021144 has 64 divisors (see below), whose sum is σ = 741482454968640. Its totient is φ = 127105792704000.

The previous prime is 321302131021103. The next prime is 321302131021211. The reversal of 321302131021144 is 441120131203123.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29166894 + ... + 38643394.

It is an arithmetic number, because the mean of its divisors is an integer number (11585663358885).

Almost surely, 2^{321302131021144} is an apocalyptic number.

It is an amenable number.

321302131021144 is an abundant number, since it is smaller than the sum of its proper divisors (420180323947496).

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

321302131021144 is a wasteful number, since it uses less digits than its factorization.

321302131021144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9523100 (or 9523096 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 321302131021144 its reverse (441120131203123), we get a palindrome (762422262224267).

The spelling of 321302131021144 in words is "three hundred twenty-one trillion, three hundred two billion, one hundred thirty-one million, twenty-one thousand, one hundred forty-four".