263185423 has 2 divisors, whose sum is σ = 263185424. Its totient is φ = 263185422.

The previous prime is 263185421. The next prime is 263185441. The reversal of 263185423 is 324581362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263185423 - 2¹ = 263185421 is a prime.

Together with 263185421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263185421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131592711 + 131592712.

It is an arithmetic number, because the mean of its divisors is an integer number (131592712).

Almost surely, 2^263185423 is an apocalyptic number.

263185423 is a deficient number, since it is larger than the sum of its proper divisors (1).

263185423 is an equidigital number, since it uses as much as digits as its factorization.

263185423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The square root of 263185423 is about 16222.9905689426. The cubic root of 263185423 is about 640.8463923698.

The spelling of 263185423 in words is "two hundred sixty-three million, one hundred eighty-five thousand, four hundred twenty-three".