230138211 has 4 divisors (see below), whose sum is σ = 306850952. Its totient is φ = 153425472.

The previous prime is 230138159. The next prime is 230138213. The reversal of 230138211 is 112831032.

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

It is not a de Polignac number, because 230138211 - 2¹⁵ = 230105443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230138213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38356366 + ... + 38356371.

It is an arithmetic number, because the mean of its divisors is an integer number (76712738).

Almost surely, 2^230138211 is an apocalyptic number.

230138211 is a deficient number, since it is larger than the sum of its proper divisors (76712741).

230138211 is an equidigital number, since it uses as much as digits as its factorization.

230138211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76712740.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 230138211 is about 15170.3068854918. The cubic root of 230138211 is about 612.8152688215.

Adding to 230138211 its reverse (112831032), we get a palindrome (342969243).

The spelling of 230138211 in words is "two hundred thirty million, one hundred thirty-eight thousand, two hundred eleven".