113257643 has 4 divisors (see below), whose sum is σ = 113330160. Its totient is φ = 113185128.

The previous prime is 113257637. The next prime is 113257687. The reversal of 113257643 is 346752311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346752311 = 4049 ⋅85639.

It is a cyclic number.

It is not a de Polignac number, because 113257643 - 2⁸ = 113257387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113257603) 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, 33863 + ... + 37056.

It is an arithmetic number, because the mean of its divisors is an integer number (28332540).

Almost surely, 2^113257643 is an apocalyptic number.

113257643 is a deficient number, since it is larger than the sum of its proper divisors (72517).

113257643 is an equidigital number, since it uses as much as digits as its factorization.

113257643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72516.

The product of its digits is 15120, while the sum is 32.

The square root of 113257643 is about 10642.2574203033. The cubic root of 113257643 is about 483.8259667881.

The spelling of 113257643 in words is "one hundred thirteen million, two hundred fifty-seven thousand, six hundred forty-three".