3117721482240 has 176 divisors, whose sum is σ = 9984775506048. Its totient is φ = 830313693184.

The previous prime is 3117721482191. The next prime is 3117721482247. The reversal of 3117721482240 is 422841277113.

It is a junction number, because it is equal to n+sod(n) for n = 3117721482192 and 3117721482201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3117721482247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11741989 + ... + 12004571.

Almost surely, 2^{3117721482240} is an apocalyptic number.

3117721482240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3117721482240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4992387753024).

3117721482240 is an abundant number, since it is smaller than the sum of its proper divisors (6867054023808).

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

3117721482240 is a wasteful number, since it uses less digits than its factorization.

3117721482240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263384 (or 263366 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 3117721482240 in words is "three trillion, one hundred seventeen billion, seven hundred twenty-one million, four hundred eighty-two thousand, two hundred forty".