321430404100240 has 80 divisors (see below), whose sum is σ = 788580112464000. Its totient is φ = 121600246608896.

The previous prime is 321430404100213. The next prime is 321430404100261. The reversal of 321430404100240 is 42001404034123.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-5 number, since 5×321430404100240⁵ (a number of 74 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321430404100199 and 321430404100208.

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, 981243190 + ... + 981570709.

It is an arithmetic number, because the mean of its divisors is an integer number (9857251405800).

Almost surely, 2^{321430404100240} is an apocalyptic number.

It is an amenable number.

321430404100240 is an abundant number, since it is smaller than the sum of its proper divisors (467149708363760).

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

321430404100240 is a wasteful number, since it uses less digits than its factorization.

321430404100240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962814024 (or 1962814018 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 321430404100240 its reverse (42001404034123), we get a palindrome (363431808134363).

The spelling of 321430404100240 in words is "three hundred twenty-one trillion, four hundred thirty billion, four hundred four million, one hundred thousand, two hundred forty".