113731971 has 4 divisors (see below), whose sum is σ = 151642632. Its totient is φ = 75821312.

The previous prime is 113731957. The next prime is 113732041. The reversal of 113731971 is 179137311.

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

It is a cyclic number.

It is not a de Polignac number, because 113731971 - 2⁶ = 113731907 is a prime.

It is a super-2 number, since 2×113731971² = 25869922455089682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113731571) 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, 18955326 + ... + 18955331.

It is an arithmetic number, because the mean of its divisors is an integer number (37910658).

Almost surely, 2^113731971 is an apocalyptic number.

113731971 is a deficient number, since it is larger than the sum of its proper divisors (37910661).

113731971 is an equidigital number, since it uses as much as digits as its factorization.

113731971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37910660.

The product of its digits is 3969, while the sum is 33.

The square root of 113731971 is about 10664.5192578006. The cubic root of 113731971 is about 484.5004542250.

The spelling of 113731971 in words is "one hundred thirteen million, seven hundred thirty-one thousand, nine hundred seventy-one".