243413431 has 4 divisors (see below), whose sum is σ = 243467352. Its totient is φ = 243359512.

The previous prime is 243413419. The next prime is 243413447. The reversal of 243413431 is 134314342.

243413431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 243413431 - 2⁵ = 243413399 is a prime.

It is a super-2 number, since 2×243413431² = 118500196782383522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243413396 and 243413405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243413231) 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, 19501 + ... + 29446.

It is an arithmetic number, because the mean of its divisors is an integer number (60866838).

Almost surely, 2^243413431 is an apocalyptic number.

243413431 is a deficient number, since it is larger than the sum of its proper divisors (53921).

243413431 is an equidigital number, since it uses as much as digits as its factorization.

243413431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53920.

The product of its digits is 3456, while the sum is 25.

The square root of 243413431 is about 15601.7124380627. The cubic root of 243413431 is about 624.3788439888.

Adding to 243413431 its reverse (134314342), we get a palindrome (377727773).

It can be divided in two parts, 24341 and 3431, that added together give a palindrome (27772).

The spelling of 243413431 in words is "two hundred forty-three million, four hundred thirteen thousand, four hundred thirty-one".