431426 has 8 divisors (see below), whose sum is σ = 685260. Its totient is φ = 203008.

The previous prime is 431423. The next prime is 431429. The reversal of 431426 is 624134.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (431423) and next prime (431429).

It can be written as a sum of positive squares in 2 ways, for example, as 429025 + 2401 = 655^2 + 49^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×431426² = 372256786952, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 431398 and 431407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431423) 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, 6311 + ... + 6378.

2⁴³¹⁴²⁶ is an apocalyptic number.

431426 is a deficient number, since it is larger than the sum of its proper divisors (253834).

431426 is a wasteful number, since it uses less digits than its factorization.

431426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12708.

The product of its digits is 576, while the sum is 20.

The square root of 431426 is about 656.8302672685. The cubic root of 431426 is about 75.5617669185.

It can be divided in two parts, 43142 and 6, that multiplied together give a palindrome (258852).

The spelling of 431426 in words is "four hundred thirty-one thousand, four hundred twenty-six".