431455 has 4 divisors (see below), whose sum is σ = 517752. Its totient is φ = 345160.

The previous prime is 431449. The next prime is 431479. The reversal of 431455 is 554134.

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

It is not a de Polignac number, because 431455 - 2³ = 431447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43141 + ... + 43150.

It is an arithmetic number, because the mean of its divisors is an integer number (129438).

2⁴³¹⁴⁵⁵ is an apocalyptic number.

431455 is a deficient number, since it is larger than the sum of its proper divisors (86297).

431455 is an equidigital number, since it uses as much as digits as its factorization.

431455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86296.

The product of its digits is 1200, while the sum is 22.

The square root of 431455 is about 656.8523426159. The cubic root of 431455 is about 75.5634599413.

Adding to 431455 its reverse (554134), we get a palindrome (985589).

The spelling of 431455 in words is "four hundred thirty-one thousand, four hundred fifty-five".