113288115528721 has 9 divisors (see below), whose sum is σ = 131784221060649. Its totient is φ = 97104035162484.

The previous prime is 113288115528689. The next prime is 113288115528743. The reversal of 113288115528721 is 127825511882311.

The square root of 113288115528721 is 10643689.

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

It is not a de Polignac number, because 113288115528721 - 2⁵ = 113288115528689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113288115528751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 73745560 + ... + 75266086.

It is an arithmetic number, because the mean of its divisors is an integer number (14642691228961).

Almost surely, 2^{113288115528721} is an apocalyptic number.

113288115528721 is the 10643689-th square number.

113288115528721 is the 5321845-th centered octagonal number.

It is an amenable number.

113288115528721 is a deficient number, since it is larger than the sum of its proper divisors (18496105531928).

113288115528721 is an frugal number, since it uses more digits than its factorization.

113288115528721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041068 (or 1520534 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 55.

The spelling of 113288115528721 in words is "one hundred thirteen trillion, two hundred eighty-eight billion, one hundred fifteen million, five hundred twenty-eight thousand, seven hundred twenty-one".