243148601 has 4 divisors (see below), whose sum is σ = 243644304. Its totient is φ = 242652900.

The previous prime is 243148597. The next prime is 243148613. The reversal of 243148601 is 106841342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106841342 = 2 ⋅53420671.

It is a cyclic number.

It is not a de Polignac number, because 243148601 - 2² = 243148597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243148621) 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, 247115 + ... + 248096.

It is an arithmetic number, because the mean of its divisors is an integer number (60911076).

Almost surely, 2^243148601 is an apocalyptic number.

It is an amenable number.

243148601 is a deficient number, since it is larger than the sum of its proper divisors (495703).

243148601 is an equidigital number, since it uses as much as digits as its factorization.

243148601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495702.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 243148601 is about 15593.2229189478. Note that the first 3 decimals coincide. The cubic root of 243148601 is about 624.1523236849.

Adding to 243148601 its reverse (106841342), we get a palindrome (349989943).

The spelling of 243148601 in words is "two hundred forty-three million, one hundred forty-eight thousand, six hundred one".