113502081 has 48 divisors (see below), whose sum is σ = 203394240. Its totient is φ = 55480320.

The previous prime is 113502071. The next prime is 113502089. The reversal of 113502081 is 180205311.

It is not a de Polignac number, because 113502081 - 2²¹ = 111404929 is a prime.

It is a super-2 number, since 2×113502081² = 25765444782661122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (113502089) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25425 + ... + 29553.

It is an arithmetic number, because the mean of its divisors is an integer number (4237380).

Almost surely, 2^113502081 is an apocalyptic number.

113502081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113502081 is a deficient number, since it is larger than the sum of its proper divisors (89892159).

113502081 is a wasteful number, since it uses less digits than its factorization.

113502081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4174 (or 4167 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 113502081 is about 10653.7355420528. The cubic root of 113502081 is about 484.1737887051.

Adding to 113502081 its reverse (180205311), we get a palindrome (293707392).

It can be divided in two parts, 11350 and 2081, that added together give a palindrome (13431).

The spelling of 113502081 in words is "one hundred thirteen million, five hundred two thousand, eighty-one".