7131075318 has 48 divisors (see below), whose sum is σ = 15535153296. Its totient is φ = 2364062400.

The previous prime is 7131075317. The next prime is 7131075331. The reversal of 7131075318 is 8135701317.

It is a happy number.

7131075318 is a `hidden beast` number, since 7 + 13 + 107 + 531 + 8 = 666.

It is a super-2 number, since 2×7131075318² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131075317) 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 23 ways as a sum of consecutive naturals, for example, 3569896 + ... + 3571892.

It is an arithmetic number, because the mean of its divisors is an integer number (323649027).

Almost surely, 2^7131075318 is an apocalyptic number.

7131075318 is an abundant number, since it is smaller than the sum of its proper divisors (8404077978).

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

7131075318 is a wasteful number, since it uses less digits than its factorization.

7131075318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 7131075318 is about 84445.6944906015. The cubic root of 7131075318 is about 1924.7973311567.

The spelling of 7131075318 in words is "seven billion, one hundred thirty-one million, seventy-five thousand, three hundred eighteen".