201324312243 has 64 divisors (see below), whose sum is σ = 312450969600. Its totient is φ = 127962167040.

The previous prime is 201324312229. The next prime is 201324312257. The reversal of 201324312243 is 342213423102.

201324312243 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 2 + 431 + 224 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (201324312229) and next prime (201324312257).

It is not a de Polignac number, because 201324312243 - 2⁹ = 201324311731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (201324312263) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87189973 + ... + 87192281.

It is an arithmetic number, because the mean of its divisors is an integer number (4882046400).

Almost surely, 2^201324312243 is an apocalyptic number.

201324312243 is a deficient number, since it is larger than the sum of its proper divisors (111126657357).

201324312243 is a wasteful number, since it uses less digits than its factorization.

201324312243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849 (or 3843 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 201324312243 its reverse (342213423102), we get a palindrome (543537735345).

The spelling of 201324312243 in words is "two hundred one billion, three hundred twenty-four million, three hundred twelve thousand, two hundred forty-three".