3117840156 has 36 divisors (see below), whose sum is σ = 7884650592. Its totient is φ = 1038825984.

The previous prime is 3117840139. The next prime is 3117840157. The reversal of 3117840156 is 6510487113.

3117840156 is a `hidden beast` number, since 31 + 178 + 401 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×3117840156² = 19441854476732208672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3117840156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3117840157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70396 + ... + 105788.

It is an arithmetic number, because the mean of its divisors is an integer number (219018072).

Almost surely, 2^3117840156 is an apocalyptic number.

3117840156 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3117840156 is an abundant number, since it is smaller than the sum of its proper divisors (4766810436).

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

3117840156 is a wasteful number, since it uses less digits than its factorization.

3117840156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37850 (or 37845 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 3117840156 is about 55837.6231227655. The cubic root of 3117840156 is about 1460.8914547043.

The spelling of 3117840156 in words is "three billion, one hundred seventeen million, eight hundred forty thousand, one hundred fifty-six".