263443 has 2 divisors, whose sum is σ = 263444. Its totient is φ = 263442.

The previous prime is 263437. The next prime is 263489. The reversal of 263443 is 344362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263443 - 2⁵ = 263411 is a prime.

It is not a weakly prime, because it can be changed into another prime (263423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131721 + 131722.

It is an arithmetic number, because the mean of its divisors is an integer number (131722).

263443 is a Friedman number, since it can be written as 6^4+4^3^2+3, using all its digits and the basic arithmetic operations.

2²⁶³⁴⁴³ is an apocalyptic number.

263443 is a deficient number, since it is larger than the sum of its proper divisors (1).

263443 is an equidigital number, since it uses as much as digits as its factorization.

263443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 22.

The square root of 263443 is about 513.2669870545. The cubic root of 263443 is about 64.1055387570.

The spelling of 263443 in words is "two hundred sixty-three thousand, four hundred forty-three".