243982355 has 4 divisors (see below), whose sum is σ = 292778832. Its totient is φ = 195185880.

The previous prime is 243982303. The next prime is 243982357. The reversal of 243982355 is 553289342.

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

It is not a de Polignac number, because 243982355 - 2¹⁴ = 243965971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243982357) 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, 24398231 + ... + 24398240.

It is an arithmetic number, because the mean of its divisors is an integer number (73194708).

Almost surely, 2^243982355 is an apocalyptic number.

243982355 is a deficient number, since it is larger than the sum of its proper divisors (48796477).

243982355 is an equidigital number, since it uses as much as digits as its factorization.

243982355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48796476.

The product of its digits is 259200, while the sum is 41.

The square root of 243982355 is about 15619.9345389153. The cubic root of 243982355 is about 624.8649137382.

The spelling of 243982355 in words is "two hundred forty-three million, nine hundred eighty-two thousand, three hundred fifty-five".