731273 has 4 divisors (see below), whose sum is σ = 746880. Its totient is φ = 715668.

The previous prime is 731267. The next prime is 731287. The reversal of 731273 is 372137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 731273 - 2⁴ = 731257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731233) 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, 7733 + ... + 7826.

It is an arithmetic number, because the mean of its divisors is an integer number (186720).

2⁷³¹²⁷³ is an apocalyptic number.

It is an amenable number.

731273 is a deficient number, since it is larger than the sum of its proper divisors (15607).

731273 is a wasteful number, since it uses less digits than its factorization.

731273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15606.

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

The square root of 731273 is about 855.1450169416. The cubic root of 731273 is about 90.0934420453.

It can be divided in two parts, 73 and 1273, that multiplied together give a palindrome (92929).

The spelling of 731273 in words is "seven hundred thirty-one thousand, two hundred seventy-three".