243351304431 has 32 divisors (see below), whose sum is σ = 343729225728. Its totient is φ = 152823427680.

The previous prime is 243351304393. The next prime is 243351304433. The reversal of 243351304431 is 134403153342.

It is not a de Polignac number, because 243351304431 - 2⁹ = 243351303919 is a prime.

It is a super-2 number, since 2×243351304431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243351304392 and 243351304401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243351304433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4416010 + ... + 4470776.

It is an arithmetic number, because the mean of its divisors is an integer number (10741538304).

Almost surely, 2^243351304431 is an apocalyptic number.

243351304431 is a deficient number, since it is larger than the sum of its proper divisors (100377921297).

243351304431 is a wasteful number, since it uses less digits than its factorization.

243351304431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55771.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 243351304431 its reverse (134403153342), we get a palindrome (377754457773).

The spelling of 243351304431 in words is "two hundred forty-three billion, three hundred fifty-one million, three hundred four thousand, four hundred thirty-one".