31440111130120 has 256 divisors, whose sum is σ = 89545464852480. Its totient is φ = 9650294246400.

The previous prime is 31440111130061. The next prime is 31440111130171. The reversal of 31440111130120 is 2103111104413.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31440111130091 and 31440111130100.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79306314 + ... + 79701766.

It is an arithmetic number, because the mean of its divisors is an integer number (349786972080).

Almost surely, 2^{31440111130120} 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 31440111130120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44772732426240).

31440111130120 is an abundant number, since it is smaller than the sum of its proper divisors (58105353722360).

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

31440111130120 is a wasteful number, since it uses less digits than its factorization.

31440111130120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395876 (or 395872 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 31440111130120 its reverse (2103111104413), we get a palindrome (33543222234533).

The spelling of 31440111130120 in words is "thirty-one trillion, four hundred forty billion, one hundred eleven million, one hundred thirty thousand, one hundred twenty".