230851639 has 4 divisors (see below), whose sum is σ = 235763424. Its totient is φ = 225939856.

The previous prime is 230851627. The next prime is 230851657. The reversal of 230851639 is 936158032.

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 230851639 - 2¹⁹ = 230327351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230851598 and 230851607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230851609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2455822 + ... + 2455915.

It is an arithmetic number, because the mean of its divisors is an integer number (58940856).

Almost surely, 2^230851639 is an apocalyptic number.

230851639 is a deficient number, since it is larger than the sum of its proper divisors (4911785).

230851639 is an equidigital number, since it uses as much as digits as its factorization.

230851639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4911784.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 230851639 is about 15193.8026510811. The cubic root of 230851639 is about 613.4478576378.

The spelling of 230851639 in words is "two hundred thirty million, eight hundred fifty-one thousand, six hundred thirty-nine".