243403431039 has 6 divisors (see below), whose sum is σ = 351582733736. Its totient is φ = 162268954020.

The previous prime is 243403430969. The next prime is 243403431059. The reversal of 243403431039 is 930134304342.

243403431039 is a `hidden beast` number, since 243 + 40 + 34 + 310 + 39 = 666.

It is not a de Polignac number, because 243403431039 - 2²⁸ = 243134995583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243403430994 and 243403431012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243403431059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13522412827 + ... + 13522412844.

Almost surely, 2^243403431039 is an apocalyptic number.

243403431039 is a deficient number, since it is larger than the sum of its proper divisors (108179302697).

243403431039 is a wasteful number, since it uses less digits than its factorization.

243403431039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27044825677 (or 27044825674 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The spelling of 243403431039 in words is "two hundred forty-three billion, four hundred three million, four hundred thirty-one thousand, thirty-nine".