113740161 has 4 divisors (see below), whose sum is σ = 151653552. Its totient is φ = 75826772.

The previous prime is 113740157. The next prime is 113740169. The reversal of 113740161 is 161047311.

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.

It is a cyclic number.

It is not a de Polignac number, because 113740161 - 2² = 113740157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113740169) 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, 18956691 + ... + 18956696.

It is an arithmetic number, because the mean of its divisors is an integer number (37913388).

Almost surely, 2^113740161 is an apocalyptic number.

It is an amenable number.

113740161 is a deficient number, since it is larger than the sum of its proper divisors (37913391).

113740161 is an equidigital number, since it uses as much as digits as its factorization.

113740161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37913390.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 113740161 is about 10664.9032344415. The cubic root of 113740161 is about 484.5120838001.

Adding to 113740161 its reverse (161047311), we get a palindrome (274787472).

The spelling of 113740161 in words is "one hundred thirteen million, seven hundred forty thousand, one hundred sixty-one".