113412505 has 4 divisors (see below), whose sum is σ = 136095012. Its totient is φ = 90730000.

The previous prime is 113412503. The next prime is 113412529. The reversal of 113412505 is 505214311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505214311 = 7 ⋅72173473.

It can be written as a sum of positive squares in 2 ways, for example, as 54997056 + 58415449 = 7416^2 + 7643^2 .

It is not a de Polignac number, because 113412505 - 2¹ = 113412503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113412503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11341246 + ... + 11341255.

It is an arithmetic number, because the mean of its divisors is an integer number (34023753).

Almost surely, 2^113412505 is an apocalyptic number.

It is an amenable number.

113412505 is a deficient number, since it is larger than the sum of its proper divisors (22682507).

113412505 is an equidigital number, since it uses as much as digits as its factorization.

113412505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22682506.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 113412505 is about 10649.5307408355. The cubic root of 113412505 is about 484.0463849746.

Adding to 113412505 its reverse (505214311), we get a palindrome (618626816).

The spelling of 113412505 in words is "one hundred thirteen million, four hundred twelve thousand, five hundred five".