3117981408 has 24 divisors (see below), whose sum is σ = 8184701448. Its totient is φ = 1039327104.

The previous prime is 3117981367. The next prime is 3117981413. The reversal of 3117981408 is 8041897113.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3117981408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16239391 + ... + 16239582.

It is an arithmetic number, because the mean of its divisors is an integer number (341029227).

Almost surely, 2^3117981408 is an apocalyptic number.

It is an amenable number.

3117981408 is an abundant number, since it is smaller than the sum of its proper divisors (5066720040).

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

3117981408 is a wasteful number, since it uses less digits than its factorization.

3117981408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32478986 (or 32478978 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 3117981408 is about 55838.8879545429. The cubic root of 3117981408 is about 1460.9135159938.

The spelling of 3117981408 in words is "three billion, one hundred seventeen million, nine hundred eighty-one thousand, four hundred eight".