431677 has 4 divisors (see below), whose sum is σ = 441760. Its totient is φ = 421596.

The previous prime is 431671. The next prime is 431693. The reversal of 431677 is 776134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776134 = 2 ⋅388067.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431677 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 (431671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4977 + ... + 5062.

It is an arithmetic number, because the mean of its divisors is an integer number (110440).

2⁴³¹⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

431677 is a deficient number, since it is larger than the sum of its proper divisors (10083).

431677 is a wasteful number, since it uses less digits than its factorization.

431677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10082.

The product of its digits is 3528, while the sum is 28.

The square root of 431677 is about 657.0213086347. The cubic root of 431677 is about 75.5764178101.

Subtracting from 431677 its sum of digits (28), we obtain a square (431649 = 657²).

The spelling of 431677 in words is "four hundred thirty-one thousand, six hundred seventy-seven".