113235328981681 has 9 divisors (see below), whose sum is σ = 113417511389049. Its totient is φ = 113053438796244.

The previous prime is 113235328981679. The next prime is 113235328981729. The reversal of 113235328981681 is 186189823532311.

The square root of 113235328981681 is 10641209.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 113235328981681 - 2¹ = 113235328981679 is a prime.

It is a super-2 number, since 2×113235328981681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113235328981631) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6884854000 + ... + 6884870446.

Almost surely, 2^{113235328981681} is an apocalyptic number.

113235328981681 is the 10641209-th square number.

113235328981681 is the 5320605-th centered octagonal number.

It is an amenable number.

113235328981681 is a deficient number, since it is larger than the sum of its proper divisors (182182407368).

113235328981681 is an frugal number, since it uses more digits than its factorization.

113235328981681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34188 (or 17094 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 61.

The spelling of 113235328981681 in words is "one hundred thirteen trillion, two hundred thirty-five billion, three hundred twenty-eight million, nine hundred eighty-one thousand, six hundred eighty-one".