5187913131 has 4 divisors (see below), whose sum is σ = 6917217512. Its totient is φ = 3458608752.

The previous prime is 5187913127. The next prime is 5187913139. The reversal of 5187913131 is 1313197815.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5187913131 - 2² = 5187913127 is a prime.

It is a super-2 number, since 2×5187913131² = 53828885309604446322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5187913131.

It is not an unprimeable number, because it can be changed into a prime (5187913139) 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 3 ways as a sum of consecutive naturals, for example, 864652186 + ... + 864652191.

It is an arithmetic number, because the mean of its divisors is an integer number (1729304378).

Almost surely, 2^5187913131 is an apocalyptic number.

5187913131 is a deficient number, since it is larger than the sum of its proper divisors (1729304381).

5187913131 is a wasteful number, since it uses less digits than its factorization.

5187913131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729304380.

The product of its digits is 22680, while the sum is 39.

The square root of 5187913131 is about 72027.1693946111. The cubic root of 5187913131 is about 1731.1348464098.

The spelling of 5187913131 in words is "five billion, one hundred eighty-seven million, nine hundred thirteen thousand, one hundred thirty-one".