9999803428231 has 32 divisors (see below), whose sum is σ = 10807306997760. Its totient is φ = 9228764160000.

The previous prime is 9999803428211. The next prime is 9999803428273. The reversal of 9999803428231 is 1328243089999.

It is a cyclic number.

It is not a de Polignac number, because 9999803428231 - 2¹¹ = 9999803426183 is a prime.

It is a super-2 number, since 2×9999803428231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999803428211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72875335 + ... + 73012423.

It is an arithmetic number, because the mean of its divisors is an integer number (337728343680).

Almost surely, 2^{9999803428231} is an apocalyptic number.

9999803428231 is a deficient number, since it is larger than the sum of its proper divisors (807503569529).

9999803428231 is a wasteful number, since it uses less digits than its factorization.

9999803428231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138007.

The product of its (nonzero) digits is 60466176, while the sum is 67.

The spelling of 9999803428231 in words is "nine trillion, nine hundred ninety-nine billion, eight hundred three million, four hundred twenty-eight thousand, two hundred thirty-one".