263145313 has 2 divisors, whose sum is σ = 263145314. Its totient is φ = 263145312.

The previous prime is 263145301. The next prime is 263145317. The reversal of 263145313 is 313541362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201412864 + 61732449 = 14192^2 + 7857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263145313 is a prime.

It is not a weakly prime, because it can be changed into another prime (263145317) 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, 131572656 + 131572657.

It is an arithmetic number, because the mean of its divisors is an integer number (131572657).

Almost surely, 2^263145313 is an apocalyptic number.

It is an amenable number.

263145313 is a deficient number, since it is larger than the sum of its proper divisors (1).

263145313 is an equidigital number, since it uses as much as digits as its factorization.

263145313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 28.

The square root of 263145313 is about 16221.7543132671. The cubic root of 263145313 is about 640.8138352795.

Adding to 263145313 its reverse (313541362), we get a palindrome (576686675).

The spelling of 263145313 in words is "two hundred sixty-three million, one hundred forty-five thousand, three hundred thirteen".