201023220320311 has 4 divisors (see below), whose sum is σ = 207955055503800. Its totient is φ = 194091385136824.

The previous prime is 201023220320239. The next prime is 201023220320341. The reversal of 201023220320311 is 113023022320102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201023220320311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201023220320341) 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, 3465917591701 + ... + 3465917591758.

It is an arithmetic number, because the mean of its divisors is an integer number (51988763875950).

Almost surely, 2^{201023220320311} is an apocalyptic number.

201023220320311 is a deficient number, since it is larger than the sum of its proper divisors (6931835183489).

201023220320311 is an equidigital number, since it uses as much as digits as its factorization.

201023220320311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931835183488.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 201023220320311 its reverse (113023022320102), we get a palindrome (314046242640413).

The spelling of 201023220320311 in words is "two hundred one trillion, twenty-three billion, two hundred twenty million, three hundred twenty thousand, three hundred eleven".