731423 has 24 divisors (see below), whose sum is σ = 984960. Its totient is φ = 535920.

The previous prime is 731413. The next prime is 731447. The reversal of 731423 is 324137.

It is not a de Polignac number, because 731423 - 2⁶ = 731359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 731395 and 731404.

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 731423.

It is not an unprimeable number, because it can be changed into a prime (731413) 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 23 ways as a sum of consecutive naturals, for example, 12368 + ... + 12426.

It is an arithmetic number, because the mean of its divisors is an integer number (41040).

2⁷³¹⁴²³ is an apocalyptic number.

731423 is a deficient number, since it is larger than the sum of its proper divisors (253537).

731423 is a wasteful number, since it uses less digits than its factorization.

731423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 100 counting only the distinct ones).

The product of its digits is 504, while the sum is 20.

The square root of 731423 is about 855.2327168672. The cubic root of 731423 is about 90.0996016658.

It can be divided in two parts, 7314 and 23, that added together give a palindrome (7337).

The spelling of 731423 in words is "seven hundred thirty-one thousand, four hundred twenty-three".