230111138 has 8 divisors (see below), whose sum is σ = 346599660. Its totient is φ = 114577920.

The previous prime is 230111131. The next prime is 230111149. The reversal of 230111138 is 831111032.

It can be written as a sum of positive squares in 2 ways, for example, as 216766729 + 13344409 = 14723^2 + 3653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×230111138² = 105902271663310088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (230111131) 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, 238223 + ... + 239186.

Almost surely, 2^230111138 is an apocalyptic number.

230111138 is a deficient number, since it is larger than the sum of its proper divisors (116488522).

230111138 is a wasteful number, since it uses less digits than its factorization.

230111138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477652.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 230111138 is about 15169.4145569300. The cubic root of 230111138 is about 612.7912377572.

The spelling of 230111138 in words is "two hundred thirty million, one hundred eleven thousand, one hundred thirty-eight".