9984802731631 has 48 divisors (see below), whose sum is σ = 13053962061504. Its totient is φ = 7555608377856.

The previous prime is 9984802731583. The next prime is 9984802731643. The reversal of 9984802731631 is 1361372084899.

It is not a de Polignac number, because 9984802731631 - 2⁹ = 9984802731119 is a prime.

It is a super-2 number, since 2×9984802731631² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9984802731631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9984802731661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125915011 + ... + 125994283.

It is an arithmetic number, because the mean of its divisors is an integer number (271957542948).

Almost surely, 2^{9984802731631} is an apocalyptic number.

9984802731631 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

9984802731631 is a deficient number, since it is larger than the sum of its proper divisors (3069159329873).

9984802731631 is a wasteful number, since it uses less digits than its factorization.

9984802731631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87920 (or 87913 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 9984802731631 in words is "nine trillion, nine hundred eighty-four billion, eight hundred two million, seven hundred thirty-one thousand, six hundred thirty-one".