113388643 has 8 divisors (see below), whose sum is σ = 118644768. Its totient is φ = 108159744.

The previous prime is 113388629. The next prime is 113388647. The reversal of 113388643 is 346883311.

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 113388643 - 2⁹ = 113388131 is a prime.

It is a super-2 number, since 2×113388643² = 25713968722762898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113388647) 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, 1971 + ... + 15187.

It is an arithmetic number, because the mean of its divisors is an integer number (14830596).

Almost surely, 2^113388643 is an apocalyptic number.

113388643 is a deficient number, since it is larger than the sum of its proper divisors (5256125).

113388643 is a wasteful number, since it uses less digits than its factorization.

113388643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13613.

The product of its digits is 41472, while the sum is 37.

The square root of 113388643 is about 10648.4103508458. The cubic root of 113388643 is about 484.0124347942.

The spelling of 113388643 in words is "one hundred thirteen million, three hundred eighty-eight thousand, six hundred forty-three".