201323123411 has 4 divisors (see below), whose sum is σ = 204735379800. Its totient is φ = 197910867024.

The previous prime is 201323123387. The next prime is 201323123431. The reversal of 201323123411 is 114321323102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201323123411 - 2²² = 201318929107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201323123431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1706128106 + ... + 1706128223.

It is an arithmetic number, because the mean of its divisors is an integer number (51183844950).

Almost surely, 2^201323123411 is an apocalyptic number.

201323123411 is a deficient number, since it is larger than the sum of its proper divisors (3412256389).

201323123411 is an equidigital number, since it uses as much as digits as its factorization.

201323123411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412256388.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 201323123411 its reverse (114321323102), we get a palindrome (315644446513).

The spelling of 201323123411 in words is "two hundred one billion, three hundred twenty-three million, one hundred twenty-three thousand, four hundred eleven".