73231 has 4 divisors (see below), whose sum is σ = 74392. Its totient is φ = 72072.

The previous prime is 73189. The next prime is 73237. The reversal of 73231 is 13237.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73231 - 2⁹ = 72719 is a prime.

It is a super-2 number, since 2×73231² = 10725558722, which contains 22 as substring.

It is a Duffinian number.

73231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73237) 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, 480 + ... + 613.

It is an arithmetic number, because the mean of its divisors is an integer number (18598).

2⁷³²³¹ is an apocalyptic number.

73231 is a deficient number, since it is larger than the sum of its proper divisors (1161).

73231 is a wasteful number, since it uses less digits than its factorization.

73231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160.

The product of its digits is 126, while the sum is 16.

The square root of 73231 is about 270.6122687537. The cubic root of 73231 is about 41.8374289873.

Adding to 73231 its reverse (13237), we get a palindrome (86468).

The spelling of 73231 in words is "seventy-three thousand, two hundred thirty-one".