1311331020201 has 8 divisors (see below), whose sum is σ = 1942712622560. Its totient is φ = 874220680116.

The previous prime is 1311331020199. The next prime is 1311331020203. The reversal of 1311331020201 is 1020201331131.

1311331020201 is a `hidden beast` number, since 1 + 311 + 3 + 310 + 20 + 20 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1311331020199) and next prime (1311331020203).

It is not a de Polignac number, because 1311331020201 - 2¹ = 1311331020199 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1311331020203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24283907755 + ... + 24283907808.

It is an arithmetic number, because the mean of its divisors is an integer number (242839077820).

Almost surely, 2^{1311331020201} is an apocalyptic number.

It is an amenable number.

1311331020201 is a deficient number, since it is larger than the sum of its proper divisors (631381602359).

1311331020201 is an equidigital number, since it uses as much as digits as its factorization.

1311331020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48567815572 (or 48567815566 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1311331020201 its reverse (1020201331131), we get a palindrome (2331532351332).

The spelling of 1311331020201 in words is "one trillion, three hundred eleven billion, three hundred thirty-one million, twenty thousand, two hundred one".