230123945 has 4 divisors (see below), whose sum is σ = 276148740. Its totient is φ = 184099152.

The previous prime is 230123941. The next prime is 230123963. The reversal of 230123945 is 549321032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 128436889 + 101687056 = 11333^2 + 10084^2 .

It is a cyclic number.

It is not a de Polignac number, because 230123945 - 2² = 230123941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (230123941) 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, 23012390 + ... + 23012399.

It is an arithmetic number, because the mean of its divisors is an integer number (69037185).

Almost surely, 2^230123945 is an apocalyptic number.

It is an amenable number.

230123945 is a deficient number, since it is larger than the sum of its proper divisors (46024795).

230123945 is an equidigital number, since it uses as much as digits as its factorization.

230123945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46024794.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 230123945 is about 15169.8366833661. The cubic root of 230123945 is about 612.8026059912.

Adding to 230123945 its reverse (549321032), we get a palindrome (779444977).

The spelling of 230123945 in words is "two hundred thirty million, one hundred twenty-three thousand, nine hundred forty-five".