243425342231 has 4 divisors (see below), whose sum is σ = 243474336000. Its totient is φ = 243376348464.

The previous prime is 243425342159. The next prime is 243425342239. The reversal of 243425342231 is 132243524342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243425342231 is a prime.

It is a super-2 number, since 2×243425342231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243425342191 and 243425342200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243425342239) 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, 24489431 + ... + 24499368.

It is an arithmetic number, because the mean of its divisors is an integer number (60868584000).

Almost surely, 2^243425342231 is an apocalyptic number.

243425342231 is a deficient number, since it is larger than the sum of its proper divisors (48993769).

243425342231 is an equidigital number, since it uses as much as digits as its factorization.

243425342231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48993768.

The product of its digits is 138240, while the sum is 35.

Adding to 243425342231 its reverse (132243524342), we get a palindrome (375668866573).

The spelling of 243425342231 in words is "two hundred forty-three billion, four hundred twenty-five million, three hundred forty-two thousand, two hundred thirty-one".