243120243431 has 8 divisors (see below), whose sum is σ = 262382453424. Its totient is φ = 223938126720.

The previous prime is 243120243409. The next prime is 243120243433. The reversal of 243120243431 is 134342021342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243120243431 - 2⁶ = 243120243367 is a prime.

It is a super-2 number, since 2×243120243431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243120243394 and 243120243403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243120243433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20017010 + ... + 20029151.

It is an arithmetic number, because the mean of its divisors is an integer number (32797806678).

Almost surely, 2^243120243431 is an apocalyptic number.

243120243431 is a deficient number, since it is larger than the sum of its proper divisors (19262209993).

243120243431 is a wasteful number, since it uses less digits than its factorization.

243120243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40046641.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 243120243431 its reverse (134342021342), we get a palindrome (377462264773).

The spelling of 243120243431 in words is "two hundred forty-three billion, one hundred twenty million, two hundred forty-three thousand, four hundred thirty-one".