113257729 has 4 divisors (see below), whose sum is σ = 121969876. Its totient is φ = 104545584.

The previous prime is 113257721. The next prime is 113257741. The reversal of 113257729 is 927752311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12215025 + 101042704 = 3495^2 + 10052^2 .

It is not a de Polignac number, because 113257729 - 2³ = 113257721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113257721) 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, 4356054 + ... + 4356079.

It is an arithmetic number, because the mean of its divisors is an integer number (30492469).

Almost surely, 2^113257729 is an apocalyptic number.

It is an amenable number.

113257729 is a deficient number, since it is larger than the sum of its proper divisors (8712147).

113257729 is an equidigital number, since it uses as much as digits as its factorization.

113257729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712146.

The product of its digits is 26460, while the sum is 37.

The square root of 113257729 is about 10642.2614607986. The cubic root of 113257729 is about 483.8260892494.

The spelling of 113257729 in words is "one hundred thirteen million, two hundred fifty-seven thousand, seven hundred twenty-nine".