245313 has 12 divisors (see below), whose sum is σ = 359268. Its totient is φ = 161280.

The previous prime is 245299. The next prime is 245317. The reversal of 245313 is 313542.

245313 = 82² + 83² + ... + 108².

It can be written as a sum of positive squares in 2 ways, for example, as 138384 + 106929 = 372^2 + 327^2 .

It is not a de Polignac number, because 245313 - 2¹⁴ = 228929 is a prime.

245313 is a Rhonda number in base 15.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 733 + ... + 1013.

It is an arithmetic number, because the mean of its divisors is an integer number (29939).

2²⁴⁵³¹³ is an apocalyptic number.

It is an amenable number.

245313 is a deficient number, since it is larger than the sum of its proper divisors (113955).

245313 is a wasteful number, since it uses less digits than its factorization.

245313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 381 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 245313 is about 495.2908236582. The cubic root of 245313 is about 62.5998829560.

Adding to 245313 its reverse (313542), we get a palindrome (558855).

The spelling of 245313 in words is "two hundred forty-five thousand, three hundred thirteen".