3117061520 has 120 divisors (see below), whose sum is σ = 7965729000. Its totient is φ = 1132773376.

The previous prime is 3117061487. The next prime is 3117061561. The reversal of 3117061520 is 251607113.

It can be written as a sum of positive squares in 12 ways, for example, as 82373776 + 3034687744 = 9076^2 + 55088^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3117061520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 668156 + ... + 672804.

It is an arithmetic number, because the mean of its divisors is an integer number (66381075).

Almost surely, 2^3117061520 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 3117061520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3982864500).

3117061520 is an abundant number, since it is smaller than the sum of its proper divisors (4848667480).

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

3117061520 is a wasteful number, since it uses less digits than its factorization.

3117061520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725 (or 4702 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 3117061520 is about 55830.6503633981. The cubic root of 3117061520 is about 1460.7698323282.

Adding to 3117061520 its reverse (251607113), we get a palindrome (3368668633).

The spelling of 3117061520 in words is "three billion, one hundred seventeen million, sixty-one thousand, five hundred twenty".