726231 has 16 divisors (see below), whose sum is σ = 1077120. Its totient is φ = 431520.

The previous prime is 726221. The next prime is 726287. The reversal of 726231 is 132627.

It is a happy number.

It is not a de Polignac number, because 726231 - 2¹⁴ = 709847 is a prime.

It is a super-2 number, since 2×726231² = 1054822930722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 726198 and 726207.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 726231.

It is not an unprimeable number, because it can be changed into a prime (726221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1761 + ... + 2133.

It is an arithmetic number, because the mean of its divisors is an integer number (67320).

2⁷²⁶²³¹ is an apocalyptic number.

726231 is a deficient number, since it is larger than the sum of its proper divisors (350889).

726231 is a wasteful number, since it uses less digits than its factorization.

726231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446.

The product of its digits is 504, while the sum is 21.

The square root of 726231 is about 852.1918798017. The cubic root of 726231 is about 89.8859048026.

Adding to 726231 its reverse (132627), we get a palindrome (858858).

The spelling of 726231 in words is "seven hundred twenty-six thousand, two hundred thirty-one".