243203403453 has 32 divisors (see below), whose sum is σ = 343044840960. Its totient is φ = 153010690560.

The previous prime is 243203403439. The next prime is 243203403461. The reversal of 243203403453 is 354304302342.

243203403453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243203403453 - 2²⁸ = 242934967997 is a prime.

It is a super-2 number, since 2×243203403453² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243203403403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3072651 + ... + 3150807.

It is an arithmetic number, because the mean of its divisors is an integer number (10720151280).

Almost surely, 2^243203403453 is an apocalyptic number.

It is an amenable number.

243203403453 is a deficient number, since it is larger than the sum of its proper divisors (99841437507).

243203403453 is a wasteful number, since it uses less digits than its factorization.

243203403453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78997.

The product of its (nonzero) digits is 103680, while the sum is 33.

Adding to 243203403453 its reverse (354304302342), we get a palindrome (597507705795).

The spelling of 243203403453 in words is "two hundred forty-three billion, two hundred three million, four hundred three thousand, four hundred fifty-three".