113143445 has 4 divisors (see below), whose sum is σ = 135772140. Its totient is φ = 90514752.

The previous prime is 113143441. The next prime is 113143451. The reversal of 113143445 is 544341311.

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: 544341311 = 8737 ⋅62303.

It can be written as a sum of positive squares in 2 ways, for example, as 17123044 + 96020401 = 4138^2 + 9799^2 .

It is a cyclic number.

It is not a de Polignac number, because 113143445 - 2² = 113143441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113143441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11314340 + ... + 11314349.

It is an arithmetic number, because the mean of its divisors is an integer number (33943035).

Almost surely, 2^113143445 is an apocalyptic number.

It is an amenable number.

113143445 is a deficient number, since it is larger than the sum of its proper divisors (22628695).

113143445 is an equidigital number, since it uses as much as digits as its factorization.

113143445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22628694.

The product of its digits is 2880, while the sum is 26.

The square root of 113143445 is about 10636.8907581116. The cubic root of 113143445 is about 483.6632977416.

Adding to 113143445 its reverse (544341311), we get a palindrome (657484756).

The spelling of 113143445 in words is "one hundred thirteen million, one hundred forty-three thousand, four hundred forty-five".