243431423430 has 64 divisors (see below), whose sum is σ = 630413219520. Its totient is φ = 59803808256.

The previous prime is 243431423423. The next prime is 243431423533. The reversal of 243431423430 is 34324134342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 243431423391 and 243431423400.

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, 414637 + ... + 811656.

It is an arithmetic number, because the mean of its divisors is an integer number (9850206555).

Almost surely, 2^243431423430 is an apocalyptic number.

243431423430 is an abundant number, since it is smaller than the sum of its proper divisors (386981796090).

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

243431423430 is a wasteful number, since it uses less digits than its factorization.

243431423430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226825.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 243431423430 its reverse (34324134342), we get a palindrome (277755557772).

The spelling of 243431423430 in words is "two hundred forty-three billion, four hundred thirty-one million, four hundred twenty-three thousand, four hundred thirty".