263867113 has 2 divisors, whose sum is σ = 263867114. Its totient is φ = 263867112.

The previous prime is 263867101. The next prime is 263867129. The reversal of 263867113 is 311768362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251285904 + 12581209 = 15852^2 + 3547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263867113 is a prime.

It is not a weakly prime, because it can be changed into another prime (263867173) 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, 131933556 + 131933557.

It is an arithmetic number, because the mean of its divisors is an integer number (131933557).

Almost surely, 2^263867113 is an apocalyptic number.

It is an amenable number.

263867113 is a deficient number, since it is larger than the sum of its proper divisors (1).

263867113 is an equidigital number, since it uses as much as digits as its factorization.

263867113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 263867113 is about 16243.9869798027. The cubic root of 263867113 is about 641.3992116679.

It can be divided in two parts, 2638 and 67113, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 263867113 in words is "two hundred sixty-three million, eight hundred sixty-seven thousand, one hundred thirteen".