1988813335231 has 16 divisors (see below), whose sum is σ = 2054629709440. Its totient is φ = 1923665254560.

The previous prime is 1988813335217. The next prime is 1988813335297. The reversal of 1988813335231 is 1325333188891.

It is a cyclic number.

It is not a de Polignac number, because 1988813335231 - 2⁹ = 1988813334719 is a prime.

It is a super-2 number, since 2×1988813335231² (a number of 25 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 (1988813375231) 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 15 ways as a sum of consecutive naturals, for example, 4074076 + ... + 4536046.

It is an arithmetic number, because the mean of its divisors is an integer number (128414356840).

Almost surely, 2^{1988813335231} is an apocalyptic number.

1988813335231 is a deficient number, since it is larger than the sum of its proper divisors (65816374209).

1988813335231 is a wasteful number, since it uses less digits than its factorization.

1988813335231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462694.

The product of its digits is 3732480, while the sum is 55.

The spelling of 1988813335231 in words is "one trillion, nine hundred eighty-eight billion, eight hundred thirteen million, three hundred thirty-five thousand, two hundred thirty-one".