243162147 has 4 divisors (see below), whose sum is σ = 324216200. Its totient is φ = 162108096.

The previous prime is 243162121. The next prime is 243162211. The reversal of 243162147 is 741261342.

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

It is not a de Polignac number, because 243162147 - 2⁶ = 243162083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243162947) 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, 40527022 + ... + 40527027.

It is an arithmetic number, because the mean of its divisors is an integer number (81054050).

Almost surely, 2^243162147 is an apocalyptic number.

243162147 is a deficient number, since it is larger than the sum of its proper divisors (81054053).

243162147 is an equidigital number, since it uses as much as digits as its factorization.

243162147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81054052.

The product of its digits is 8064, while the sum is 30.

The square root of 243162147 is about 15593.6572682613. The cubic root of 243162147 is about 624.1639141421.

The spelling of 243162147 in words is "two hundred forty-three million, one hundred sixty-two thousand, one hundred forty-seven".