201323012215 has 32 divisors (see below), whose sum is σ = 274869262080. Its totient is φ = 140488610304.

The previous prime is 201323012179. The next prime is 201323012221. The reversal of 201323012215 is 512210323102.

It is a cyclic number.

It is not a de Polignac number, because 201323012215 - 2⁷ = 201323012087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1047604 + ... + 1224793.

It is an arithmetic number, because the mean of its divisors is an integer number (8589664440).

Almost surely, 2^201323012215 is an apocalyptic number.

201323012215 is a deficient number, since it is larger than the sum of its proper divisors (73546249865).

201323012215 is a wasteful number, since it uses less digits than its factorization.

201323012215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272491.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 201323012215 its reverse (512210323102), we get a palindrome (713533335317).

The spelling of 201323012215 in words is "two hundred one billion, three hundred twenty-three million, twelve thousand, two hundred fifteen".