243042425431 has 16 divisors (see below), whose sum is σ = 263306703520. Its totient is φ = 223006141440.

The previous prime is 243042425413. The next prime is 243042425467. The reversal of 243042425431 is 134524240342.

It is a cyclic number.

It is not a de Polignac number, because 243042425431 - 2²⁹ = 242505554519 is a prime.

It is a super-2 number, since 2×243042425431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243042425491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1423951 + ... + 1585471.

It is an arithmetic number, because the mean of its divisors is an integer number (16456668970).

Almost surely, 2^243042425431 is an apocalyptic number.

243042425431 is a deficient number, since it is larger than the sum of its proper divisors (20264278089).

243042425431 is a wasteful number, since it uses less digits than its factorization.

243042425431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162226.

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 243042425431 its reverse (134524240342), we get a palindrome (377566665773).

The spelling of 243042425431 in words is "two hundred forty-three billion, forty-two million, four hundred twenty-five thousand, four hundred thirty-one".