263013 has 4 divisors (see below), whose sum is σ = 350688. Its totient is φ = 175340.

The previous prime is 263009. The next prime is 263023. The reversal of 263013 is 310362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 263013 - 2² = 263009 is a prime.

It is a D-number.

It is a Curzon number.

263013 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 262983 and 263001.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 263013.

It is not an unprimeable number, because it can be changed into a prime (263023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43833 + ... + 43838.

It is an arithmetic number, because the mean of its divisors is an integer number (87672).

2²⁶³⁰¹³ is an apocalyptic number.

It is an amenable number.

263013 is a deficient number, since it is larger than the sum of its proper divisors (87675).

263013 is an equidigital number, since it uses as much as digits as its factorization.

263013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87674.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 263013 is about 512.8479306773. The cubic root of 263013 is about 64.0706414004.

Adding to 263013 its reverse (310362), we get a palindrome (573375).

The spelling of 263013 in words is "two hundred sixty-three thousand, thirteen".