243323020101 has 64 divisors (see below), whose sum is σ = 385938432000. Its totient is φ = 133418611200.

The previous prime is 243323020081. The next prime is 243323020121. The reversal of 243323020101 is 101020323342.

243323020101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243323020081) and next prime (243323020121).

It is not a de Polignac number, because 243323020101 - 2²³ = 243314631493 is a prime.

It is a super-2 number, since 2×243323020101² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243323020121) 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 63 ways as a sum of consecutive naturals, for example, 73754950 + ... + 73758248.

It is an arithmetic number, because the mean of its divisors is an integer number (6030288000).

Almost surely, 2^243323020101 is an apocalyptic number.

243323020101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

243323020101 is a deficient number, since it is larger than the sum of its proper divisors (142615411899).

243323020101 is a wasteful number, since it uses less digits than its factorization.

243323020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050.

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

Adding to 243323020101 its reverse (101020323342), we get a palindrome (344343343443).

The spelling of 243323020101 in words is "two hundred forty-three billion, three hundred twenty-three million, twenty thousand, one hundred one".