243312321453 has 8 divisors (see below), whose sum is σ = 334881474816. Its totient is φ = 156975691200.

The previous prime is 243312321433. The next prime is 243312321463. The reversal of 243312321453 is 354123213342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243312321453 - 2²² = 243308127149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243312321433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308130668 + ... + 1308130853.

It is an arithmetic number, because the mean of its divisors is an integer number (41860184352).

Almost surely, 2^243312321453 is an apocalyptic number.

It is an amenable number.

243312321453 is a deficient number, since it is larger than the sum of its proper divisors (91569153363).

243312321453 is a wasteful number, since it uses less digits than its factorization.

243312321453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616261555.

The product of its digits is 51840, while the sum is 33.

Adding to 243312321453 its reverse (354123213342), we get a palindrome (597435534795).

The spelling of 243312321453 in words is "two hundred forty-three billion, three hundred twelve million, three hundred twenty-one thousand, four hundred fifty-three".