263041243 has 2 divisors, whose sum is σ = 263041244. Its totient is φ = 263041242.

The previous prime is 263041171. The next prime is 263041253. The reversal of 263041243 is 342140362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263041243 - 2¹³ = 263033051 is a prime.

It is not a weakly prime, because it can be changed into another prime (263041253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131520621 + 131520622.

It is an arithmetic number, because the mean of its divisors is an integer number (131520622).

Almost surely, 2^263041243 is an apocalyptic number.

263041243 is a deficient number, since it is larger than the sum of its proper divisors (1).

263041243 is an equidigital number, since it uses as much as digits as its factorization.

263041243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 263041243 is about 16218.5462665431. The cubic root of 263041243 is about 640.7293467403.

The spelling of 263041243 in words is "two hundred sixty-three million, forty-one thousand, two hundred forty-three".