9981010232231 has 4 divisors (see below), whose sum is σ = 10005900532464. Its totient is φ = 9956119932000.

The previous prime is 9981010232213. The next prime is 9981010232257. The reversal of 9981010232231 is 1322320101899.

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 9981010232231 - 2²⁶ = 9980943123367 is a prime.

It is a super-2 number, since 2×9981010232231² (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 (9981010232731) 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, 12445149515 + ... + 12445150316.

It is an arithmetic number, because the mean of its divisors is an integer number (2501475133116).

Almost surely, 2^{9981010232231} is an apocalyptic number.

9981010232231 is a deficient number, since it is larger than the sum of its proper divisors (24890300233).

9981010232231 is a wasteful number, since it uses less digits than its factorization.

9981010232231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24890300232.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 9981010232231 in words is "nine trillion, nine hundred eighty-one billion, ten million, two hundred thirty-two thousand, two hundred thirty-one".