113240505 has 32 divisors (see below), whose sum is σ = 214214400. Its totient is φ = 49980672.

The previous prime is 113240503. The next prime is 113240507. The reversal of 113240505 is 505042311.

It is an interprime number because it is at equal distance from previous prime (113240503) and next prime (113240507).

It is not a de Polignac number, because 113240505 - 2¹ = 113240503 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (113240503) 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 31 ways as a sum of consecutive naturals, for example, 15550 + ... + 21639.

It is an arithmetic number, because the mean of its divisors is an integer number (6694200).

Almost surely, 2^113240505 is an apocalyptic number.

113240505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113240505 is a deficient number, since it is larger than the sum of its proper divisors (100973895).

113240505 is a wasteful number, since it uses less digits than its factorization.

113240505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37233.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 113240505 is about 10641.4522035294. The cubic root of 113240505 is about 483.8015615840.

Adding to 113240505 its reverse (505042311), we get a palindrome (618282816).

The spelling of 113240505 in words is "one hundred thirteen million, two hundred forty thousand, five hundred five".