245307313 has 2 divisors, whose sum is σ = 245307314. Its totient is φ = 245307312.

The previous prime is 245307289. The next prime is 245307329. The reversal of 245307313 is 313703542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240498064 + 4809249 = 15508^2 + 2193^2 .

It is a cyclic number.

It is not a de Polignac number, because 245307313 - 2²¹ = 243210161 is a prime.

It is a super-2 number, since 2×245307313² = 120351355622559938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245307353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122653656 + 122653657.

It is an arithmetic number, because the mean of its divisors is an integer number (122653657).

Almost surely, 2^245307313 is an apocalyptic number.

It is an amenable number.

245307313 is a deficient number, since it is larger than the sum of its proper divisors (1).

245307313 is an equidigital number, since it uses as much as digits as its factorization.

245307313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 245307313 is about 15662.2895197350. The cubic root of 245307313 is about 625.9939920895.

The spelling of 245307313 in words is "two hundred forty-five million, three hundred seven thousand, three hundred thirteen".