243400430 has 64 divisors (see below), whose sum is σ = 553875840. Its totient is φ = 74939904.

The previous prime is 243400427. The next prime is 243400457. The reversal of 243400430 is 34004342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30056 + ... + 37284.

It is an arithmetic number, because the mean of its divisors is an integer number (8654310).

Almost surely, 2^243400430 is an apocalyptic number.

243400430 is an abundant number, since it is smaller than the sum of its proper divisors (310475410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243400430 is a wasteful number, since it uses less digits than its factorization.

243400430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7293.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 243400430 is about 15601.2957795178. The cubic root of 243400430 is about 624.3677275194.

Adding to 243400430 its reverse (34004342), we get a palindrome (277404772).

The spelling of 243400430 in words is "two hundred forty-three million, four hundred thousand, four hundred thirty".