321140431120 has 80 divisors (see below), whose sum is σ = 779475324672. Its totient is φ = 122814236160.

The previous prime is 321140431103. The next prime is 321140431193. The reversal of 321140431120 is 21134041123.

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

It is a junction number, because it is equal to n+sod(n) for n = 321140431091 and 321140431100.

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, 4047349 + ... + 4125931.

Almost surely, 2^321140431120 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 321140431120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389737662336).

321140431120 is an abundant number, since it is smaller than the sum of its proper divisors (458334893552).

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

321140431120 is a wasteful number, since it uses less digits than its factorization.

321140431120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80840 (or 80834 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 321140431120 its reverse (21134041123), we get a palindrome (342274472243).

The spelling of 321140431120 in words is "three hundred twenty-one billion, one hundred forty million, four hundred thirty-one thousand, one hundred twenty".