233872813 has 4 divisors (see below), whose sum is σ = 237363520. Its totient is φ = 230382108.

The previous prime is 233872787. The next prime is 233872853. The reversal of 233872813 is 318278332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 233872813 - 2⁵ = 233872781 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 (233872853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1745253 + ... + 1745386.

It is an arithmetic number, because the mean of its divisors is an integer number (59340880).

Almost surely, 2^233872813 is an apocalyptic number.

It is an amenable number.

233872813 is a deficient number, since it is larger than the sum of its proper divisors (3490707).

233872813 is an equidigital number, since it uses as much as digits as its factorization.

233872813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490706.

The product of its digits is 48384, while the sum is 37.

The square root of 233872813 is about 15292.9007385780. The cubic root of 233872813 is about 616.1123482678.

The spelling of 233872813 in words is "two hundred thirty-three million, eight hundred seventy-two thousand, eight hundred thirteen".