113865973 has 4 divisors (see below), whose sum is σ = 122624908. Its totient is φ = 105107040.

The previous prime is 113865971. The next prime is 113865989. The reversal of 113865973 is 379568311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 379568311 = 37 ⋅10258603.

It can be written as a sum of positive squares in 2 ways, for example, as 72880369 + 40985604 = 8537^2 + 6402^2 .

It is a cyclic number.

It is not a de Polignac number, because 113865973 - 2¹ = 113865971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113865971) 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, 4379448 + ... + 4379473.

It is an arithmetic number, because the mean of its divisors is an integer number (30656227).

Almost surely, 2^113865973 is an apocalyptic number.

113865973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

113865973 is a deficient number, since it is larger than the sum of its proper divisors (8758935).

113865973 is an equidigital number, since it uses as much as digits as its factorization.

113865973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8758934.

The product of its digits is 136080, while the sum is 43.

The square root of 113865973 is about 10670.8000168685. The cubic root of 113865973 is about 484.6906632682.

The spelling of 113865973 in words is "one hundred thirteen million, eight hundred sixty-five thousand, nine hundred seventy-three".