113288381 has 4 divisors (see below), whose sum is σ = 114884064. Its totient is φ = 111692700.

The previous prime is 113288369. The next prime is 113288429. The reversal of 113288381 is 183882311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183882311 = 2549 ⋅72139.

It is a cyclic number.

It is not a de Polignac number, because 113288381 - 2¹⁴ = 113271997 is a prime.

It is a super-2 number, since 2×113288381² = 25668514539202322, which 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 (113288321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797735 + ... + 797876.

It is an arithmetic number, because the mean of its divisors is an integer number (28721016).

Almost surely, 2^113288381 is an apocalyptic number.

It is an amenable number.

113288381 is a deficient number, since it is larger than the sum of its proper divisors (1595683).

113288381 is an equidigital number, since it uses as much as digits as its factorization.

113288381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595682.

The product of its digits is 9216, while the sum is 35.

The square root of 113288381 is about 10643.7014708230. The cubic root of 113288381 is about 483.8697327744.

The spelling of 113288381 in words is "one hundred thirteen million, two hundred eighty-eight thousand, three hundred eighty-one".