243012200431 has 16 divisors (see below), whose sum is σ = 326282116608. Its totient is φ = 174793989600.

The previous prime is 243012200419. The next prime is 243012200513. The reversal of 243012200431 is 134002210342.

It is a cyclic number.

It is not a de Polignac number, because 243012200431 - 2¹⁷ = 243012069359 is a prime.

It is a super-2 number, since 2×243012200431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243012200531) 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, 121383715 + ... + 121385716.

It is an arithmetic number, because the mean of its divisors is an integer number (20392632288).

Almost surely, 2^243012200431 is an apocalyptic number.

243012200431 is a deficient number, since it is larger than the sum of its proper divisors (83269916177).

243012200431 is a wasteful number, since it uses less digits than its factorization.

243012200431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242769462.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 243012200431 its reverse (134002210342), we get a palindrome (377014410773).

The spelling of 243012200431 in words is "two hundred forty-three billion, twelve million, two hundred thousand, four hundred thirty-one".