113203823 has 4 divisors (see below), whose sum is σ = 113281440. Its totient is φ = 113126208.

The previous prime is 113203771. The next prime is 113203837. The reversal of 113203823 is 328302311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328302311 = 19 ⋅17279069.

It is a cyclic number.

It is not a de Polignac number, because 113203823 - 2⁸ = 113203567 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 (113203423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36578 + ... + 39551.

It is an arithmetic number, because the mean of its divisors is an integer number (28320360).

Almost surely, 2^113203823 is an apocalyptic number.

113203823 is a deficient number, since it is larger than the sum of its proper divisors (77617).

113203823 is an equidigital number, since it uses as much as digits as its factorization.

113203823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77616.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 113203823 is about 10639.7285209727. The cubic root of 113203823 is about 483.7493166578.

The spelling of 113203823 in words is "one hundred thirteen million, two hundred three thousand, eight hundred twenty-three".