731723 has 4 divisors (see below), whose sum is σ = 735600. Its totient is φ = 727848.

The previous prime is 731719. The next prime is 731729. The reversal of 731723 is 327137.

731723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327137 = 277 ⋅1181.

It is a cyclic number.

It is not a de Polignac number, because 731723 - 2² = 731719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731729) 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, 1640 + ... + 2037.

It is an arithmetic number, because the mean of its divisors is an integer number (183900).

2⁷³¹⁷²³ is an apocalyptic number.

731723 is a deficient number, since it is larger than the sum of its proper divisors (3877).

731723 is a wasteful number, since it uses less digits than its factorization.

731723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876.

The product of its digits is 882, while the sum is 23.

The square root of 731723 is about 855.4080897443. The cubic root of 731723 is about 90.1119183808. Note that the first 3 decimals are identical.

The spelling of 731723 in words is "seven hundred thirty-one thousand, seven hundred twenty-three".