431138405487 has 8 divisors (see below), whose sum is σ = 575125084800. Its totient is φ = 287288664920.

The previous prime is 431138405479. The next prime is 431138405507. The reversal of 431138405487 is 784504831134.

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 431138405487 - 2³ = 431138405479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431138405287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34227339 + ... + 34239932.

It is an arithmetic number, because the mean of its divisors is an integer number (71890635600).

Almost surely, 2^431138405487 is an apocalyptic number.

431138405487 is a deficient number, since it is larger than the sum of its proper divisors (143986679313).

431138405487 is a wasteful number, since it uses less digits than its factorization.

431138405487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68469373.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 431138405487 in words is "four hundred thirty-one billion, one hundred thirty-eight million, four hundred five thousand, four hundred eighty-seven".