263134013 has 2 divisors, whose sum is σ = 263134014. Its totient is φ = 263134012.

The previous prime is 263134009. The next prime is 263134019. The reversal of 263134013 is 310431362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261210244 + 1923769 = 16162^2 + 1387^2 .

It is a cyclic number.

It is not a de Polignac number, because 263134013 - 2² = 263134009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 263134013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263134019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131567006 + 131567007.

It is an arithmetic number, because the mean of its divisors is an integer number (131567007).

Almost surely, 2^263134013 is an apocalyptic number.

It is an amenable number.

263134013 is a deficient number, since it is larger than the sum of its proper divisors (1).

263134013 is an equidigital number, since it uses as much as digits as its factorization.

263134013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 263134013 is about 16221.4060118104. The cubic root of 263134013 is about 640.8046625276.

Adding to 263134013 its reverse (310431362), we get a palindrome (573565375).

The spelling of 263134013 in words is "two hundred sixty-three million, one hundred thirty-four thousand, thirteen".