243323015451 has 16 divisors (see below), whose sum is σ = 325995136800. Its totient is φ = 161433762048.

The previous prime is 243323015417. The next prime is 243323015459. The reversal of 243323015451 is 154510323342.

243323015451 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 243323015451 - 2¹¹ = 243323013403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243323015459) 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 15 ways as a sum of consecutive naturals, for example, 1457655 + ... + 1615983.

It is an arithmetic number, because the mean of its divisors is an integer number (20374696050).

Almost surely, 2^243323015451 is an apocalyptic number.

243323015451 is a deficient number, since it is larger than the sum of its proper divisors (82672121349).

243323015451 is a wasteful number, since it uses less digits than its factorization.

243323015451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160798.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 243323015451 its reverse (154510323342), we get a palindrome (397833338793).

The spelling of 243323015451 in words is "two hundred forty-three billion, three hundred twenty-three million, fifteen thousand, four hundred fifty-one".