9912998631 has 8 divisors (see below), whose sum is σ = 13673101680. Its totient is φ = 6380780672.

The previous prime is 9912998621. The next prime is 9912998647. The reversal of 9912998631 is 1368992199.

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 9912998631 - 2⁶ = 9912998567 is a prime.

It is a super-2 number, since 2×9912998631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9912998621) 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, 56971170 + ... + 56971343.

It is an arithmetic number, because the mean of its divisors is an integer number (1709137710).

Almost surely, 2^9912998631 is an apocalyptic number.

9912998631 is a deficient number, since it is larger than the sum of its proper divisors (3760103049).

9912998631 is a wasteful number, since it uses less digits than its factorization.

9912998631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113942545.

The product of its digits is 1889568, while the sum is 57.

The square root of 9912998631 is about 99564.0428618686. The cubic root of 9912998631 is about 2148.1685236612.

The spelling of 9912998631 in words is "nine billion, nine hundred twelve million, nine hundred ninety-eight thousand, six hundred thirty-one".