243013453 has 12 divisors (see below), whose sum is σ = 263656512. Its totient is φ = 223839680.

The previous prime is 243013451. The next prime is 243013457. The reversal of 243013453 is 354310342.

It is not a de Polignac number, because 243013453 - 2¹ = 243013451 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 (243013451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4638 + ... + 22528.

It is an arithmetic number, because the mean of its divisors is an integer number (21971376).

Almost surely, 2^243013453 is an apocalyptic number.

It is an amenable number.

243013453 is a deficient number, since it is larger than the sum of its proper divisors (20643059).

243013453 is a wasteful number, since it uses less digits than its factorization.

243013453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17972 (or 17955 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 243013453 is about 15588.8887673240. Note that the first 3 decimals coincide. The cubic root of 243013453 is about 624.0366624922.

Adding to 243013453 its reverse (354310342), we get a palindrome (597323795).

The spelling of 243013453 in words is "two hundred forty-three million, thirteen thousand, four hundred fifty-three".