673431 has 8 divisors (see below), whose sum is σ = 979584. Its totient is φ = 408120.

The previous prime is 673429. The next prime is 673441. The reversal of 673431 is 134376.

673431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 673431 - 2¹ = 673429 is a prime.

It is a super-2 number, since 2×673431² = 907018623522, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 673431.

It is not an unprimeable number, because it can be changed into a prime (673411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10171 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (122448).

2⁶⁷³⁴³¹ is an apocalyptic number.

673431 is a deficient number, since it is larger than the sum of its proper divisors (306153).

673431 is a wasteful number, since it uses less digits than its factorization.

673431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20421.

The product of its digits is 1512, while the sum is 24.

The square root of 673431 is about 820.6284177385. The cubic root of 673431 is about 87.6525122484.

It can be divided in two parts, 6 and 73431, that added together give a palindrome (73437).

The spelling of 673431 in words is "six hundred seventy-three thousand, four hundred thirty-one".