113992281 has 12 divisors (see below), whose sum is σ = 177321508. Its totient is φ = 70149024.

The previous prime is 113992237. The next prime is 113992303. The reversal of 113992281 is 182299311.

It can be written as a sum of positive squares in 2 ways, for example, as 56475225 + 57517056 = 7515^2 + 7584^2 .

It is not a de Polignac number, because 113992281 - 2⁶ = 113992217 is a prime.

It is a super-2 number, since 2×113992281² = 25988480255165922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113992231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 487030 + ... + 487263.

Almost surely, 2^113992281 is an apocalyptic number.

It is an amenable number.

113992281 is a deficient number, since it is larger than the sum of its proper divisors (63329227).

113992281 is a wasteful number, since it uses less digits than its factorization.

113992281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974312 (or 974309 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 113992281 is about 10676.7167706182. The cubic root of 113992281 is about 484.8698144932.

The spelling of 113992281 in words is "one hundred thirteen million, nine hundred ninety-two thousand, two hundred eighty-one".