9813306631 has 4 divisors (see below), whose sum is σ = 9814133664. Its totient is φ = 9812479600.

The previous prime is 9813306623. The next prime is 9813306653. The reversal of 9813306631 is 1366033189.

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

It is a cyclic number.

It is not a de Polignac number, because 9813306631 - 2³ = 9813306623 is a prime.

It is a super-2 number, since 2×9813306631² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9813306691) 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, 395455 + ... + 419536.

It is an arithmetic number, because the mean of its divisors is an integer number (2453533416).

Almost surely, 2^9813306631 is an apocalyptic number.

9813306631 is a deficient number, since it is larger than the sum of its proper divisors (827033).

9813306631 is a wasteful number, since it uses less digits than its factorization.

9813306631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827032.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 9813306631 is about 99062.1352031138. The cubic root of 9813306631 is about 2140.9430896510.

The spelling of 9813306631 in words is "nine billion, eight hundred thirteen million, three hundred six thousand, six hundred thirty-one".