230481139 has 16 divisors (see below), whose sum is σ = 268144128. Its totient is φ = 194020992.

The previous prime is 230481133. The next prime is 230481169. The reversal of 230481139 is 931184032.

It is a cyclic number.

It is not a de Polignac number, because 230481139 - 2¹¹ = 230479091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230481139.

It is not an unprimeable number, because it can be changed into a prime (230481133) 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 15 ways as a sum of consecutive naturals, for example, 235419 + ... + 236395.

It is an arithmetic number, because the mean of its divisors is an integer number (16759008).

Almost surely, 2^230481139 is an apocalyptic number.

230481139 is a deficient number, since it is larger than the sum of its proper divisors (37662989).

230481139 is an equidigital number, since it uses as much as digits as its factorization.

230481139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 230481139 is about 15181.6052840271. The cubic root of 230481139 is about 613.1195022615.

The spelling of 230481139 in words is "two hundred thirty million, four hundred eighty-one thousand, one hundred thirty-nine".