857313 has 6 divisors (see below), whose sum is σ = 1238354. Its totient is φ = 571536.

The previous prime is 857309. The next prime is 857321. The reversal of 857313 is 313758.

It can be written as a sum of positive squares in only one way, i.e., 535824 + 321489 = 732^2 + 567^2 .

It is not a de Polignac number, because 857313 - 2² = 857309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47620 + ... + 47637.

2⁸⁵⁷³¹³ is an apocalyptic number.

It is an amenable number.

857313 is a deficient number, since it is larger than the sum of its proper divisors (381041).

857313 is a wasteful number, since it uses less digits than its factorization.

857313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95263 (or 95260 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 857313 is about 925.9119828580. The cubic root of 857313 is about 94.9977100094.

The spelling of 857313 in words is "eight hundred fifty-seven thousand, three hundred thirteen".