340263 has 24 divisors (see below), whose sum is σ = 614016. Its totient is φ = 176400.

The previous prime is 340261. The next prime is 340267. The reversal of 340263 is 362043.

It is not a de Polignac number, because 340263 - 2¹ = 340261 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448 + ... + 938.

It is an arithmetic number, because the mean of its divisors is an integer number (25584).

2³⁴⁰²⁶³ is an apocalyptic number.

340263 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

340263 is a deficient number, since it is larger than the sum of its proper divisors (273753).

340263 is a wasteful number, since it uses less digits than its factorization.

340263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 340263 is about 583.3206665291. The cubic root of 340263 is about 69.8133120753.

The spelling of 340263 in words is "three hundred forty thousand, two hundred sixty-three".