243151241 has 4 divisors (see below), whose sum is σ = 246780432. Its totient is φ = 239522052.

The previous prime is 243151231. The next prime is 243151261. The reversal of 243151241 is 142151342.

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.

It is not a de Polignac number, because 243151241 - 2¹⁰ = 243150217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243151201) 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, 1814495 + ... + 1814628.

It is an arithmetic number, because the mean of its divisors is an integer number (61695108).

Almost surely, 2^243151241 is an apocalyptic number.

It is an amenable number.

243151241 is a deficient number, since it is larger than the sum of its proper divisors (3629191).

243151241 is an equidigital number, since it uses as much as digits as its factorization.

243151241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629190.

The product of its digits is 960, while the sum is 23.

The square root of 243151241 is about 15593.3075708780. The cubic root of 243151241 is about 624.1545826000.

The spelling of 243151241 in words is "two hundred forty-three million, one hundred fifty-one thousand, two hundred forty-one".