709528231 has 2 divisors, whose sum is σ = 709528232. Its totient is φ = 709528230.

The previous prime is 709528213. The next prime is 709528273. The reversal of 709528231 is 132825907.

Together with previous prime (709528213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (132825907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 709528231 - 2⁵ = 709528199 is a prime.

It is a super-2 number, since 2×709528231² = 1006860621171978722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709528531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354764115 + 354764116.

It is an arithmetic number, because the mean of its divisors is an integer number (354764116).

Almost surely, 2^709528231 is an apocalyptic number.

709528231 is a deficient number, since it is larger than the sum of its proper divisors (1).

709528231 is an equidigital number, since it uses as much as digits as its factorization.

709528231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 709528231 is about 26636.9711303669. The cubic root of 709528231 is about 891.9145047158.

The spelling of 709528231 in words is "seven hundred nine million, five hundred twenty-eight thousand, two hundred thirty-one".