731973 has 16 divisors (see below), whose sum is σ = 1092672. Its totient is φ = 432000.

The previous prime is 731957. The next prime is 731981. The reversal of 731973 is 379137.

731973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 731973 - 2⁴ = 731957 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 731973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731923) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (68292).

2⁷³¹⁹⁷³ is an apocalyptic number.

It is an amenable number.

731973 is a deficient number, since it is larger than the sum of its proper divisors (360699).

731973 is a wasteful number, since it uses less digits than its factorization.

731973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596.

The product of its digits is 3969, while the sum is 30.

The square root of 731973 is about 855.5542063481. The cubic root of 731973 is about 90.1221797385.

Subtracting from 731973 its reverse (379137), we obtain a square (352836 = 594²).

The spelling of 731973 in words is "seven hundred thirty-one thousand, nine hundred seventy-three".