243414431 has 8 divisors (see below), whose sum is σ = 262342080. Its totient is φ = 224515872.

The previous prime is 243414397. The next prime is 243414463. The reversal of 243414431 is 134414342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243414431 is a prime.

It is a super-2 number, since 2×243414431² = 118501170438107522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243414431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243404431) 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, 12026 + ... + 25128.

It is an arithmetic number, because the mean of its divisors is an integer number (32792760).

Almost surely, 2^243414431 is an apocalyptic number.

243414431 is a deficient number, since it is larger than the sum of its proper divisors (18927649).

243414431 is a wasteful number, since it uses less digits than its factorization.

243414431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14545.

The product of its digits is 4608, while the sum is 26.

The square root of 243414431 is about 15601.7444857939. The cubic root of 243414431 is about 624.3796990197.

Adding to 243414431 its reverse (134414342), we get a palindrome (377828773).

The spelling of 243414431 in words is "two hundred forty-three million, four hundred fourteen thousand, four hundred thirty-one".