431478905047 has 4 divisors (see below), whose sum is σ = 431894188960. Its totient is φ = 431063621136.

The previous prime is 431478905029. The next prime is 431478905089. The reversal of 431478905047 is 740509874134.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 431478905047 - 2²³ = 431470516439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431478904985 and 431478905003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431478905947) 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, 207640398 + ... + 207642475.

It is an arithmetic number, because the mean of its divisors is an integer number (107973547240).

Almost surely, 2^431478905047 is an apocalyptic number.

431478905047 is a deficient number, since it is larger than the sum of its proper divisors (415283913).

431478905047 is a wasteful number, since it uses less digits than its factorization.

431478905047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415283912.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 431478905047 in words is "four hundred thirty-one billion, four hundred seventy-eight million, nine hundred five thousand, forty-seven".