431371 has 4 divisors (see below), whose sum is σ = 435744. Its totient is φ = 427000.

The previous prime is 431369. The next prime is 431377. The reversal of 431371 is 173134.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 431371 - 2¹ = 431369 is a prime.

It is a Duffinian number.

431371 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (431377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035 + ... + 2236.

It is an arithmetic number, because the mean of its divisors is an integer number (108936).

2⁴³¹³⁷¹ is an apocalyptic number.

431371 is a deficient number, since it is larger than the sum of its proper divisors (4373).

431371 is a wasteful number, since it uses less digits than its factorization.

431371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its digits is 252, while the sum is 19.

The square root of 431371 is about 656.7883981923. The cubic root of 431371 is about 75.5585558049.

It can be divided in two parts, 4 and 31371, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 431371 in words is "four hundred thirty-one thousand, three hundred seventy-one".