720231 has 8 divisors (see below), whose sum is σ = 970224. Its totient is φ = 475200.

The previous prime is 720229. The next prime is 720241. The reversal of 720231 is 132027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 720231 - 2¹ = 720229 is a prime.

It is a super-2 number, since 2×720231² = 1037465386722, which contains 22 as substring.

720231 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 720231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886 + ... + 1491.

It is an arithmetic number, because the mean of its divisors is an integer number (121278).

2⁷²⁰²³¹ is an apocalyptic number.

720231 is a deficient number, since it is larger than the sum of its proper divisors (249993).

720231 is a wasteful number, since it uses less digits than its factorization.

720231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 720231 is about 848.6642445632. The cubic root of 720231 is about 89.6376791331.

Adding to 720231 its reverse (132027), we get a palindrome (852258).

The spelling of 720231 in words is "seven hundred twenty thousand, two hundred thirty-one".