113721105 has 8 divisors (see below), whose sum is σ = 181953792. Its totient is φ = 60651248.

The previous prime is 113721103. The next prime is 113721119. The reversal of 113721105 is 501127311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113721105 - 2¹ = 113721103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113721103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3790689 + ... + 3790718.

It is an arithmetic number, because the mean of its divisors is an integer number (22744224).

Almost surely, 2^113721105 is an apocalyptic number.

113721105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113721105 is a deficient number, since it is larger than the sum of its proper divisors (68232687).

113721105 is an equidigital number, since it uses as much as digits as its factorization.

113721105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7581415.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 113721105 is about 10664.0097993203. The cubic root of 113721105 is about 484.4850239417.

Adding to 113721105 its reverse (501127311), we get a palindrome (614848416).

The spelling of 113721105 in words is "one hundred thirteen million, seven hundred twenty-one thousand, one hundred five".