243253141 has 4 divisors (see below), whose sum is σ = 243331884. Its totient is φ = 243174400.

The previous prime is 243253117. The next prime is 243253151. The reversal of 243253141 is 141352342.

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 170406916 + 72846225 = 13054^2 + 8535^2 .

It is a cyclic number.

It is not a de Polignac number, because 243253141 - 2⁷ = 243253013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243253111) 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, 34540 + ... + 40981.

It is an arithmetic number, because the mean of its divisors is an integer number (60832971).

Almost surely, 2^243253141 is an apocalyptic number.

It is an amenable number.

243253141 is a deficient number, since it is larger than the sum of its proper divisors (78743).

243253141 is an equidigital number, since it uses as much as digits as its factorization.

243253141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78742.

The product of its digits is 2880, while the sum is 25.

The square root of 243253141 is about 15596.5746559942. The cubic root of 243253141 is about 624.2417608093.

The spelling of 243253141 in words is "two hundred forty-three million, two hundred fifty-three thousand, one hundred forty-one".