321204130401340 has 48 divisors (see below), whose sum is σ = 674928536405760. Its totient is φ = 128405498457600.

The previous prime is 321204130401299. The next prime is 321204130401389. The reversal of 321204130401340 is 43104031402123.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 321204130401299 and 321204130401308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495737506 + ... + 496385014.

It is an arithmetic number, because the mean of its divisors is an integer number (14061011175120).

Almost surely, 2^{321204130401340} is an apocalyptic number.

It is an amenable number.

321204130401340 is an abundant number, since it is smaller than the sum of its proper divisors (353724406004420).

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

321204130401340 is a wasteful number, since it uses less digits than its factorization.

321204130401340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662182 (or 662180 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 321204130401340 its reverse (43104031402123), we get a palindrome (364308161803463).

The spelling of 321204130401340 in words is "three hundred twenty-one trillion, two hundred four billion, one hundred thirty million, four hundred one thousand, three hundred forty".