3131040816 has 60 divisors (see below), whose sum is σ = 8804179800. Its totient is φ = 1038723840.

The previous prime is 3131040811. The next prime is 3131040817. The reversal of 3131040816 is 6180401313.

It is a self number, because there is not a number n which added to its sum of digits gives 3131040816.

It is not an unprimeable number, because it can be changed into a prime (3131040811) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 21141 + ... + 81908.

It is an arithmetic number, because the mean of its divisors is an integer number (146736330).

Almost surely, 2^3131040816 is an apocalyptic number.

3131040816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3131040816 is an abundant number, since it is smaller than the sum of its proper divisors (5673138984).

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

3131040816 is a wasteful number, since it uses less digits than its factorization.

3131040816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103274 (or 103265 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 3131040816 is about 55955.7040524020. The cubic root of 3131040816 is about 1462.9503135775.

The spelling of 3131040816 in words is "three billion, one hundred thirty-one million, forty thousand, eight hundred sixteen".