5131188831 has 4 divisors (see below), whose sum is σ = 6841585112. Its totient is φ = 3420792552.

The previous prime is 5131188781. The next prime is 5131188869. The reversal of 5131188831 is 1388811315.

It is a happy number.

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

It is not a de Polignac number, because 5131188831 - 2²¹ = 5129091679 is a prime.

It is a super-3 number, since 3×5131188831³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 5131188831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131188331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855198136 + ... + 855198141.

It is an arithmetic number, because the mean of its divisors is an integer number (1710396278).

Almost surely, 2^5131188831 is an apocalyptic number.

5131188831 is a deficient number, since it is larger than the sum of its proper divisors (1710396281).

5131188831 is a wasteful number, since it uses less digits than its factorization.

5131188831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710396280.

The product of its digits is 23040, while the sum is 39.

The square root of 5131188831 is about 71632.3169456356. The cubic root of 5131188831 is about 1724.8023388723.

The spelling of 5131188831 in words is "five billion, one hundred thirty-one million, one hundred eighty-eight thousand, eight hundred thirty-one".