313729 has 4 divisors (see below), whose sum is σ = 337876. Its totient is φ = 289584.

The previous prime is 313727. The next prime is 313739. The reversal of 313729 is 927313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90000 + 223729 = 300^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 313729 - 2¹ = 313727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12054 + ... + 12079.

It is an arithmetic number, because the mean of its divisors is an integer number (84469).

2³¹³⁷²⁹ is an apocalyptic number.

It is an amenable number.

313729 is a deficient number, since it is larger than the sum of its proper divisors (24147).

313729 is a wasteful number, since it uses less digits than its factorization.

313729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24146.

The product of its digits is 1134, while the sum is 25.

The square root of 313729 is about 560.1151667291. The cubic root of 313729 is about 67.9492845611.

The spelling of 313729 in words is "three hundred thirteen thousand, seven hundred twenty-nine".