431332138985 has 64 divisors (see below), whose sum is σ = 581030682624. Its totient is φ = 304725657600.

The previous prime is 431332138981. The next prime is 431332139027. The reversal of 431332138985 is 589831233134.

It is not a de Polignac number, because 431332138985 - 2² = 431332138981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431332138981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 250627925 + ... + 250629645.

It is an arithmetic number, because the mean of its divisors is an integer number (9078604416).

Almost surely, 2^431332138985 is an apocalyptic number.

It is an amenable number.

431332138985 is a deficient number, since it is larger than the sum of its proper divisors (149698543639).

431332138985 is a wasteful number, since it uses less digits than its factorization.

431332138985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594.

The product of its digits is 1866240, while the sum is 50.

The spelling of 431332138985 in words is "four hundred thirty-one billion, three hundred thirty-two million, one hundred thirty-eight thousand, nine hundred eighty-five".