9481312531 has 8 divisors (see below), whose sum is σ = 9984283280. Its totient is φ = 8978737248.

The previous prime is 9481312501. The next prime is 9481312543. The reversal of 9481312531 is 1352131849.

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 9481312531 - 2¹¹ = 9481310483 is a prime.

It is a super-2 number, since 2×9481312531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9481312501) 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, 48996 + ... + 146161.

It is an arithmetic number, because the mean of its divisors is an integer number (1248035410).

Almost surely, 2^9481312531 is an apocalyptic number.

9481312531 is a deficient number, since it is larger than the sum of its proper divisors (502970749).

9481312531 is a wasteful number, since it uses less digits than its factorization.

9481312531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197733.

The product of its digits is 25920, while the sum is 37.

The square root of 9481312531 is about 97372.0315645104. The cubic root of 9481312531 is about 2116.5221643749.

The spelling of 9481312531 in words is "nine billion, four hundred eighty-one million, three hundred twelve thousand, five hundred thirty-one".