201323310235553 has 4 divisors (see below), whose sum is σ = 219625429347888. Its totient is φ = 183021191123220.

The previous prime is 201323310235529. The next prime is 201323310235601. The reversal of 201323310235553 is 355532013323102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201323310235553 - 2⁸ = 201323310235297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201323310235513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9151059556151 + ... + 9151059556172.

It is an arithmetic number, because the mean of its divisors is an integer number (54906357336972).

Almost surely, 2^{201323310235553} is an apocalyptic number.

It is an amenable number.

201323310235553 is a deficient number, since it is larger than the sum of its proper divisors (18302119112335).

201323310235553 is a wasteful number, since it uses less digits than its factorization.

201323310235553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18302119112334.

The product of its (nonzero) digits is 243000, while the sum is 38.

Adding to 201323310235553 its reverse (355532013323102), we get a palindrome (556855323558655).

The spelling of 201323310235553 in words is "two hundred one trillion, three hundred twenty-three billion, three hundred ten million, two hundred thirty-five thousand, five hundred fifty-three".