243220313001 has 16 divisors (see below), whose sum is σ = 334064715968. Its totient is φ = 157287873600.

The previous prime is 243220312967. The next prime is 243220313003. The reversal of 243220313001 is 100313022342.

243220313001 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 243220313001 - 2¹¹ = 243220310953 is a prime.

It is a super-4 number, since 4×243220313001⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243220313003) 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, 3273190 + ... + 3346671.

It is an arithmetic number, because the mean of its divisors is an integer number (20879044748).

Almost surely, 2^243220313001 is an apocalyptic number.

It is an amenable number.

243220313001 is a deficient number, since it is larger than the sum of its proper divisors (90844402967).

243220313001 is a wasteful number, since it uses less digits than its factorization.

243220313001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6620232.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 243220313001 its reverse (100313022342), we get a palindrome (343533335343).

The spelling of 243220313001 in words is "two hundred forty-three billion, two hundred twenty million, three hundred thirteen thousand, one".