706231 has 4 divisors (see below), whose sum is σ = 747792. Its totient is φ = 664672.

The previous prime is 706229. The next prime is 706253. The reversal of 706231 is 132607.

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 706231 - 2¹ = 706229 is a prime.

It is a super-2 number, since 2×706231² = 997524450722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 706199 and 706208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706201) 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, 20755 + ... + 20788.

It is an arithmetic number, because the mean of its divisors is an integer number (186948).

2⁷⁰⁶²³¹ is an apocalyptic number.

706231 is the 532-nd centered pentagonal number.

706231 is a deficient number, since it is larger than the sum of its proper divisors (41561).

706231 is a wasteful number, since it uses less digits than its factorization.

706231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41560.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 706231 is about 840.3755113043. The cubic root of 706231 is about 89.0530761138.

Adding to 706231 its reverse (132607), we get a palindrome (838838).

The spelling of 706231 in words is "seven hundred six thousand, two hundred thirty-one".