243400435 has 4 divisors (see below), whose sum is σ = 292080528. Its totient is φ = 194720344.

The previous prime is 243400427. The next prime is 243400457. The reversal of 243400435 is 534004342.

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 243400435 - 2³ = 243400427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24340039 + ... + 24340048.

It is an arithmetic number, because the mean of its divisors is an integer number (73020132).

Almost surely, 2^243400435 is an apocalyptic number.

243400435 is a deficient number, since it is larger than the sum of its proper divisors (48680093).

243400435 is an equidigital number, since it uses as much as digits as its factorization.

243400435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48680092.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 243400435 is about 15601.2959397609. The cubic root of 243400435 is about 624.3677317948.

Adding to 243400435 its reverse (534004342), we get a palindrome (777404777).

The spelling of 243400435 in words is "two hundred forty-three million, four hundred thousand, four hundred thirty-five".