243307201 has 4 divisors (see below), whose sum is σ = 248965552. Its totient is φ = 237648852.

The previous prime is 243307171. The next prime is 243307249. The reversal of 243307201 is 102703342.

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 a cyclic number.

It is not a de Polignac number, because 243307201 - 2⁷ = 243307073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243307291) 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, 2829111 + ... + 2829196.

It is an arithmetic number, because the mean of its divisors is an integer number (62241388).

Almost surely, 2^243307201 is an apocalyptic number.

It is an amenable number.

243307201 is a deficient number, since it is larger than the sum of its proper divisors (5658351).

243307201 is an equidigital number, since it uses as much as digits as its factorization.

243307201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5658350.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 243307201 is about 15598.3076325607. The cubic root of 243307201 is about 624.2880007192.

The spelling of 243307201 in words is "two hundred forty-three million, three hundred seven thousand, two hundred one".