321431010140420 has 12 divisors (see below), whose sum is σ = 675005121294924. Its totient is φ = 128572404056160.

The previous prime is 321431010140341. The next prime is 321431010140431. The reversal of 321431010140420 is 24041010134123.

It can be written as a sum of positive squares in 2 ways, for example, as 48008712884224 + 273422297256196 = 6928832^2 + 16535486^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 321431010140420.

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 3 ways as a sum of consecutive naturals, for example, 8035775253491 + ... + 8035775253530.

It is an arithmetic number, because the mean of its divisors is an integer number (56250426774577).

Almost surely, 2^{321431010140420} is an apocalyptic number.

It is an amenable number.

321431010140420 is an abundant number, since it is smaller than the sum of its proper divisors (353574111154504).

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

321431010140420 is a wasteful number, since it uses less digits than its factorization.

321431010140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16071550507030 (or 16071550507028 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 321431010140420 its reverse (24041010134123), we get a palindrome (345472020274543).

The spelling of 321431010140420 in words is "three hundred twenty-one trillion, four hundred thirty-one billion, ten million, one hundred forty thousand, four hundred twenty".