230121243 has 28 divisors (see below), whose sum is σ = 376402968. Its totient is φ = 139462560.

The previous prime is 230121211. The next prime is 230121257. The reversal of 230121243 is 342121032.

It is not a de Polignac number, because 230121243 - 2⁵ = 230121211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230121263) 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 27 ways as a sum of consecutive naturals, for example, 6330 + ... + 22367.

Almost surely, 2^230121243 is an apocalyptic number.

230121243 is a deficient number, since it is larger than the sum of its proper divisors (146281725).

230121243 is an equidigital number, since it uses as much as digits as its factorization.

230121243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28726 (or 28711 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 230121243 is about 15169.7476247959. The cubic root of 230121243 is about 612.8002075749.

Adding to 230121243 its reverse (342121032), we get a palindrome (572242275).

The spelling of 230121243 in words is "two hundred thirty million, one hundred twenty-one thousand, two hundred forty-three".