431494687 has 6 divisors (see below), whose sum is σ = 467239992. Its totient is φ = 398302632.

The previous prime is 431494669. The next prime is 431494691. The reversal of 431494687 is 786494134.

It is a de Polignac number, because none of the positive numbers 2^k-431494687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431494607) 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, 1276443 + ... + 1276780.

It is an arithmetic number, because the mean of its divisors is an integer number (77873332).

Almost surely, 2^431494687 is an apocalyptic number.

431494687 is a deficient number, since it is larger than the sum of its proper divisors (35745305).

431494687 is a wasteful number, since it uses less digits than its factorization.

431494687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553249 (or 2553236 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 431494687 is about 20772.4501925026. The cubic root of 431494687 is about 755.6577674926.

The spelling of 431494687 in words is "four hundred thirty-one million, four hundred ninety-four thousand, six hundred eighty-seven".