263261003 has 2 divisors, whose sum is σ = 263261004. Its totient is φ = 263261002.

The previous prime is 263260993. The next prime is 263261081. The reversal of 263261003 is 300162362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263261003 - 2⁶ = 263260939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 263261003.

It is not a weakly prime, because it can be changed into another prime (263261503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131630501 + 131630502.

It is an arithmetic number, because the mean of its divisors is an integer number (131630502).

Almost surely, 2^263261003 is an apocalyptic number.

263261003 is a deficient number, since it is larger than the sum of its proper divisors (1).

263261003 is an equidigital number, since it uses as much as digits as its factorization.

263261003 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 263261003 is about 16225.3198119482. The cubic root of 263261003 is about 640.9077312971.

The spelling of 263261003 in words is "two hundred sixty-three million, two hundred sixty-one thousand, three".