731313 has 24 divisors (see below), whose sum is σ = 1179360. Its totient is φ = 432960.

The previous prime is 731299. The next prime is 731327. The reversal of 731313 is 313137.

731313 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (731299) and next prime (731327).

It is not a de Polignac number, because 731313 - 2⁶ = 731249 is a prime.

Its product of digits (189) is a multiple of the sum of its prime factors (189).

731313 is strictly pandigital in base 7.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (731333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8173 + ... + 8261.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

2⁷³¹³¹³ is an apocalyptic number.

It is an amenable number.

731313 is a deficient number, since it is larger than the sum of its proper divisors (448047).

731313 is a wasteful number, since it uses less digits than its factorization.

731313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 186 counting only the distinct ones).

The product of its digits is 189, while the sum is 18.

The square root of 731313 is about 855.1684044678. The cubic root of 731313 is about 90.0950846932.

The spelling of 731313 in words is "seven hundred thirty-one thousand, three hundred thirteen".