243241431 has 8 divisors (see below), whose sum is σ = 327533424. Its totient is φ = 160555200.

The previous prime is 243241421. The next prime is 243241447. The reversal of 243241431 is 134142342.

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

It is not a de Polignac number, because 243241431 - 2¹⁷ = 243110359 is a prime.

It is a super-2 number, since 2×243241431² = 118332787509855522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243241421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401086 + ... + 401691.

It is an arithmetic number, because the mean of its divisors is an integer number (40941678).

Almost surely, 2^243241431 is an apocalyptic number.

243241431 is a deficient number, since it is larger than the sum of its proper divisors (84291993).

243241431 is a wasteful number, since it uses less digits than its factorization.

243241431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802881.

The product of its digits is 2304, while the sum is 24.

The square root of 243241431 is about 15596.1992485349. The cubic root of 243241431 is about 624.2317438255.

Adding to 243241431 its reverse (134142342), we get a palindrome (377383773).

The spelling of 243241431 in words is "two hundred forty-three million, two hundred forty-one thousand, four hundred thirty-one".