263120503 has 2 divisors, whose sum is σ = 263120504. Its totient is φ = 263120502.

The previous prime is 263120497. The next prime is 263120581. The reversal of 263120503 is 305021362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263120503 - 2²¹ = 261023351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263120003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131560251 + 131560252.

It is an arithmetic number, because the mean of its divisors is an integer number (131560252).

Almost surely, 2^263120503 is an apocalyptic number.

263120503 is a deficient number, since it is larger than the sum of its proper divisors (1).

263120503 is an equidigital number, since it uses as much as digits as its factorization.

263120503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 263120503 is about 16220.9895814035. The cubic root of 263120503 is about 640.7936954681.

Adding to 263120503 its reverse (305021362), we get a palindrome (568141865).

The spelling of 263120503 in words is "two hundred sixty-three million, one hundred twenty thousand, five hundred three".