113144137 has 4 divisors (see below), whose sum is σ = 115775440. Its totient is φ = 110512836.

The previous prime is 113144093. The next prime is 113144147. The reversal of 113144137 is 731441311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 731441311 = 31 ⋅23594881.

It is a cyclic number.

It is not a de Polignac number, because 113144137 - 2²³ = 104755529 is a prime.

It is a super-3 number, since 3×113144137³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113144147) 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, 1315587 + ... + 1315672.

It is an arithmetic number, because the mean of its divisors is an integer number (28943860).

Almost surely, 2^113144137 is an apocalyptic number.

It is an amenable number.

113144137 is a deficient number, since it is larger than the sum of its proper divisors (2631303).

113144137 is an equidigital number, since it uses as much as digits as its factorization.

113144137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631302.

The product of its digits is 1008, while the sum is 25.

The square root of 113144137 is about 10636.9232863643. The cubic root of 113144137 is about 483.6642837887.

Adding to 113144137 its reverse (731441311), we get a palindrome (844585448).

It can be divided in two parts, 11314 and 4137, that added together give a palindrome (15451).

The spelling of 113144137 in words is "one hundred thirteen million, one hundred forty-four thousand, one hundred thirty-seven".