1431728587405 has 8 divisors (see below), whose sum is σ = 1719690561792. Its totient is φ = 1144305365328.

The previous prime is 1431728587397. The next prime is 1431728587453. The reversal of 1431728587405 is 5047858271341.

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 1431728587405 - 2³ = 1431728587397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134682229 + ... + 134692858.

It is an arithmetic number, because the mean of its divisors is an integer number (214961320224).

Almost surely, 2^{1431728587405} is an apocalyptic number.

It is an amenable number.

1431728587405 is a deficient number, since it is larger than the sum of its proper divisors (287961974387).

1431728587405 is a wasteful number, since it uses less digits than its factorization.

1431728587405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269376155.

The product of its (nonzero) digits is 7526400, while the sum is 55.

The spelling of 1431728587405 in words is "one trillion, four hundred thirty-one billion, seven hundred twenty-eight million, five hundred eighty-seven thousand, four hundred five".