321140111344 has 80 divisors (see below), whose sum is σ = 684149774112. Its totient is φ = 145136001024.

The previous prime is 321140111323. The next prime is 321140111371. The reversal of 321140111344 is 443111041123.

It is a super-2 number, since 2×321140111344² (a number of 24 digits) contains 22 as substring.

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, 1868524 + ... + 2033140.

Almost surely, 2^321140111344 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 321140111344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342074887056).

321140111344 is an abundant number, since it is smaller than the sum of its proper divisors (363009662768).

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

321140111344 is a wasteful number, since it uses less digits than its factorization.

321140111344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164834 (or 164828 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 321140111344 its reverse (443111041123), we get a palindrome (764251152467).

The spelling of 321140111344 in words is "three hundred twenty-one billion, one hundred forty million, one hundred eleven thousand, three hundred forty-four".