243484813 has 16 divisors (see below), whose sum is σ = 288743616. Its totient is φ = 202400640.

The previous prime is 243484751. The next prime is 243484837. The reversal of 243484813 is 318484342.

It is not a de Polignac number, because 243484813 - 2¹⁷ = 243353741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243487813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7345 + ... + 23257.

It is an arithmetic number, because the mean of its divisors is an integer number (18046476).

Almost surely, 2^243484813 is an apocalyptic number.

It is an amenable number.

243484813 is a deficient number, since it is larger than the sum of its proper divisors (45258803).

243484813 is a wasteful number, since it uses less digits than its factorization.

243484813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16044.

The product of its digits is 73728, while the sum is 37.

The square root of 243484813 is about 15603.9999038708. Note that the first 4 decimals coincide. The cubic root of 243484813 is about 624.4398719204.

It can be divided in two parts, 24348 and 4813, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 243484813 in words is "two hundred forty-three million, four hundred eighty-four thousand, eight hundred thirteen".