113169281 has 8 divisors (see below), whose sum is σ = 117589800. Its totient is φ = 108783360.

The previous prime is 113169247. The next prime is 113169283. The reversal of 113169281 is 182961311.

It can be written as a sum of positive squares in 4 ways, for example, as 69872881 + 43296400 = 8359^2 + 6580^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113169281 - 2²² = 108974977 is a prime.

It is a super-2 number, since 2×113169281² = 25614572324113922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113169283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880 + ... + 15161.

It is an arithmetic number, because the mean of its divisors is an integer number (14698725).

Almost surely, 2^113169281 is an apocalyptic number.

It is an amenable number.

113169281 is a deficient number, since it is larger than the sum of its proper divisors (4420519).

113169281 is a wasteful number, since it uses less digits than its factorization.

113169281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17299.

The product of its digits is 2592, while the sum is 32.

The square root of 113169281 is about 10638.1051414244. The cubic root of 113169281 is about 483.7001093422.

The spelling of 113169281 in words is "one hundred thirteen million, one hundred sixty-nine thousand, two hundred eighty-one".