5316031981 has 8 divisors (see below), whose sum is σ = 5727922200. Its totient is φ = 4904565312.

The previous prime is 5316031967. The next prime is 5316032047. The reversal of 5316031981 is 1891306135.

It can be written as a sum of positive squares in 4 ways, for example, as 2411792100 + 2904239881 = 49110^2 + 53891^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5316031981 - 2²⁵ = 5282477549 is a prime.

It is a super-2 number, since 2×5316031981² = 56520392046029568722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5316031981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5316031901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79570 + ... + 130243.

It is an arithmetic number, because the mean of its divisors is an integer number (715990275).

Almost surely, 2^5316031981 is an apocalyptic number.

It is an amenable number.

5316031981 is a deficient number, since it is larger than the sum of its proper divisors (411890219).

5316031981 is a wasteful number, since it uses less digits than its factorization.

5316031981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211775.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 5316031981 is about 72911.1238495197. The cubic root of 5316031981 is about 1745.2696174284.

The spelling of 5316031981 in words is "five billion, three hundred sixteen million, thirty-one thousand, nine hundred eighty-one".