243232320151 has 4 divisors (see below), whose sum is σ = 243234159592. Its totient is φ = 243230480712.

The previous prime is 243232320131. The next prime is 243232320169. The reversal of 243232320151 is 151023232342.

It is a happy number.

243232320151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243232320151 - 2³³ = 234642385559 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 (243232320101) 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 3 ways as a sum of consecutive naturals, for example, 704601 + ... + 991426.

It is an arithmetic number, because the mean of its divisors is an integer number (60808539898).

Almost surely, 2^243232320151 is an apocalyptic number.

243232320151 is a deficient number, since it is larger than the sum of its proper divisors (1839441).

243232320151 is a wasteful number, since it uses less digits than its factorization.

243232320151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839440.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 243232320151 its reverse (151023232342), we get a palindrome (394255552493).

The spelling of 243232320151 in words is "two hundred forty-three billion, two hundred thirty-two million, three hundred twenty thousand, one hundred fifty-one".