263135 has 4 divisors (see below), whose sum is σ = 315768. Its totient is φ = 210504.

The previous prime is 263129. The next prime is 263167. The reversal of 263135 is 531362.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 263135 - 2⁴ = 263119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26309 + ... + 26318.

It is an arithmetic number, because the mean of its divisors is an integer number (78942).

2²⁶³¹³⁵ is an apocalyptic number.

263135 is a deficient number, since it is larger than the sum of its proper divisors (52633).

263135 is an equidigital number, since it uses as much as digits as its factorization.

263135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52632.

The product of its digits is 540, while the sum is 20.

The square root of 263135 is about 512.9668605280. The cubic root of 263135 is about 64.0805463733.

Adding to 263135 its reverse (531362), we get a palindrome (794497).

The spelling of 263135 in words is "two hundred sixty-three thousand, one hundred thirty-five".