263356013 has 2 divisors, whose sum is σ = 263356014. Its totient is φ = 263356012.

The previous prime is 263356007. The next prime is 263356021. The reversal of 263356013 is 310653362.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258148489 + 5207524 = 16067^2 + 2282^2 .

It is a cyclic number.

It is not a de Polignac number, because 263356013 - 2⁶ = 263355949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263356043) 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, 131678006 + 131678007.

It is an arithmetic number, because the mean of its divisors is an integer number (131678007).

Almost surely, 2^263356013 is an apocalyptic number.

It is an amenable number.

263356013 is a deficient number, since it is larger than the sum of its proper divisors (1).

263356013 is an equidigital number, since it uses as much as digits as its factorization.

263356013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 263356013 is about 16228.2473791842. The cubic root of 263356013 is about 640.9848224969.

The spelling of 263356013 in words is "two hundred sixty-three million, three hundred fifty-six thousand, thirteen".