232785991 has 4 divisors (see below), whose sum is σ = 233457192. Its totient is φ = 232114792.

The previous prime is 232785953. The next prime is 232786007. The reversal of 232785991 is 199587232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 232785991 - 2¹³ = 232777799 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 (232785491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335080 + ... + 335773.

It is an arithmetic number, because the mean of its divisors is an integer number (58364298).

Almost surely, 2^232785991 is an apocalyptic number.

232785991 is a deficient number, since it is larger than the sum of its proper divisors (671201).

232785991 is an equidigital number, since it uses as much as digits as its factorization.

232785991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671200.

The product of its digits is 272160, while the sum is 46.

The square root of 232785991 is about 15257.3258141786. The cubic root of 232785991 is about 615.1564948650.

The spelling of 232785991 in words is "two hundred thirty-two million, seven hundred eighty-five thousand, nine hundred ninety-one".