321001312404 has 96 divisors (see below), whose sum is σ = 790835633280. Its totient is φ = 101059342848.

The previous prime is 321001312393. The next prime is 321001312409. The reversal of 321001312404 is 404213100123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321001312409) 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, 189604182 + ... + 189605874.

It is an arithmetic number, because the mean of its divisors is an integer number (8237871180).

Almost surely, 2^321001312404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321001312404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395417816640).

321001312404 is an abundant number, since it is smaller than the sum of its proper divisors (469834320876).

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

321001312404 is a wasteful number, since it uses less digits than its factorization.

321001312404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769 (or 3767 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 321001312404 its reverse (404213100123), we get a palindrome (725214412527).

The spelling of 321001312404 in words is "three hundred twenty-one billion, one million, three hundred twelve thousand, four hundred four".