247383 has 6 divisors (see below), whose sum is σ = 357344. Its totient is φ = 164916.

The previous prime is 247381. The next prime is 247391. The reversal of 247383 is 383742.

It is not a de Polignac number, because 247383 - 2¹ = 247381 is a prime.

It is a super-2 number, since 2×247383² = 122396697378, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 4⁸ + 3⁵ + 7⁴ + 8 + 3¹¹ .

It is a Duffinian number.

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 247383.

It is not an unprimeable number, because it can be changed into a prime (247381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13735 + ... + 13752.

2²⁴⁷³⁸³ is an apocalyptic number.

247383 is a deficient number, since it is larger than the sum of its proper divisors (109961).

247383 is a wasteful number, since it uses less digits than its factorization.

247383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27493 (or 27490 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 247383 is about 497.3761152287. The cubic root of 247383 is about 62.7754667719.

It can be divided in two parts, 2473 and 83, that added together give a triangular number (2556 = T₇₁).

The spelling of 247383 in words is "two hundred forty-seven thousand, three hundred eighty-three".