705231 has 12 divisors (see below), whose sum is σ = 1028352. Its totient is φ = 465696.

The previous prime is 705209. The next prime is 705247. The reversal of 705231 is 132507.

It is not a de Polignac number, because 705231 - 2⁶ = 705167 is a prime.

It is a super-2 number, since 2×705231² = 994701526722, which contains 22 as substring.

705231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705031) 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 11 ways as a sum of consecutive naturals, for example, 835 + ... + 1451.

It is an arithmetic number, because the mean of its divisors is an integer number (85696).

2⁷⁰⁵²³¹ is an apocalyptic number.

705231 is a deficient number, since it is larger than the sum of its proper divisors (323121).

705231 is a wasteful number, since it uses less digits than its factorization.

705231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 705231 is about 839.7803284193. The cubic root of 705231 is about 89.0110241783.

Adding to 705231 its reverse (132507), we get a palindrome (837738).

The spelling of 705231 in words is "seven hundred five thousand, two hundred thirty-one".