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713 = 2331

713 has 4 divisors (see below), whose sum is σ = 768. Its totient is φ = 660.

The previous prime is 709. The next prime is 719. The reversal of 713 is 317.

713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 713 - 22 = 709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11 and base 14.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 694 and 703.

It is not an unprimeable number, because it can be changed into a prime (719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8 + ... + 38.

It is an arithmetic number, because the mean of its divisors is an integer number (192).

It is an amenable number.

713 is a deficient number, since it is larger than the sum of its proper divisors (55).

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

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

The sum of its prime factors is 54.

The product of its digits is 21, while the sum is 11.

The square root of 713 is about 26.7020598456. The cubic root of 713 is about 8.9336687085.

It can be divided in two parts, 7 and 13, that multiplied together give a triangular number (91 = T13).

The spelling of 713 in words is "seven hundred thirteen", and thus it is an aban number and an oban number.

Divisors: 1 23 31 713