203823113 has 8 divisors (see below), whose sum is σ = 219868488. Its totient is φ = 187830144.

The previous prime is 203823097. The next prime is 203823119. The reversal of 203823113 is 311328302.

It can be written as a sum of positive squares in 4 ways, for example, as 39778249 + 164044864 = 6307^2 + 12808^2 .

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 203823113 - 2⁴ = 203823097 is a prime.

It is a super-2 number, since 2×203823113² = 83087722786021538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203823119) 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, 4820 + ... + 20757.

It is an arithmetic number, because the mean of its divisors is an integer number (27483561).

Almost surely, 2^203823113 is an apocalyptic number.

It is an amenable number.

203823113 is a deficient number, since it is larger than the sum of its proper divisors (16045375).

203823113 is a wasteful number, since it uses less digits than its factorization.

203823113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26203.

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

The square root of 203823113 is about 14276.6632306012. The cubic root of 203823113 is about 588.5063366937.

The spelling of 203823113 in words is "two hundred three million, eight hundred twenty-three thousand, one hundred thirteen".