709331 has 4 divisors (see below), whose sum is σ = 810672. Its totient is φ = 607992.

The previous prime is 709321. The next prime is 709337. The reversal of 709331 is 133907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133907 = 359 ⋅373.

It is a de Polignac number, because none of the positive numbers 2^k-709331 is a prime.

It is a super-2 number, since 2×709331² = 1006300935122, 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 = 709297 and 709306.

It is not an unprimeable number, because it can be changed into a prime (709337) 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 3 ways as a sum of consecutive naturals, for example, 50660 + ... + 50673.

It is an arithmetic number, because the mean of its divisors is an integer number (202668).

2⁷⁰⁹³³¹ is an apocalyptic number.

709331 is a deficient number, since it is larger than the sum of its proper divisors (101341).

709331 is a wasteful number, since it uses less digits than its factorization.

709331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101340.

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 709331 is about 842.2179052953. The cubic root of 709331 is about 89.1831853792.

The spelling of 709331 in words is "seven hundred nine thousand, three hundred thirty-one".