321713 has 4 divisors (see below), whose sum is σ = 367680. Its totient is φ = 275748.

The previous prime is 321709. The next prime is 321721. The reversal of 321713 is 317123.

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.

It is a cyclic number.

It is not a de Polignac number, because 321713 - 2² = 321709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321691 and 321700.

It is not an unprimeable number, because it can be changed into a prime (321733) 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, 22973 + ... + 22986.

It is an arithmetic number, because the mean of its divisors is an integer number (91920).

2³²¹⁷¹³ is an apocalyptic number.

It is an amenable number.

321713 is a deficient number, since it is larger than the sum of its proper divisors (45967).

321713 is an equidigital number, since it uses as much as digits as its factorization.

321713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45966.

The product of its digits is 126, while the sum is 17.

The square root of 321713 is about 567.1974964684. The cubic root of 321713 is about 68.5208702635.

Adding to 321713 its reverse (317123), we get a palindrome (638836).

The spelling of 321713 in words is "three hundred twenty-one thousand, seven hundred thirteen".