243941587 has 8 divisors (see below), whose sum is σ = 247698432. Its totient is φ = 240193800.

The previous prime is 243941567. The next prime is 243941641. The reversal of 243941587 is 785149342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243941587 - 2¹¹ = 243939539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243941507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68628 + ... + 72094.

It is an arithmetic number, because the mean of its divisors is an integer number (30962304).

Almost surely, 2^243941587 is an apocalyptic number.

243941587 is a deficient number, since it is larger than the sum of its proper divisors (3756845).

243941587 is an equidigital number, since it uses as much as digits as its factorization.

243941587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529.

The product of its digits is 241920, while the sum is 43.

The square root of 243941587 is about 15618.6294853294. The cubic root of 243941587 is about 624.8301080630.

The spelling of 243941587 in words is "two hundred forty-three million, nine hundred forty-one thousand, five hundred eighty-seven".