1331331312133 has 4 divisors (see below), whose sum is σ = 1351201928800. Its totient is φ = 1311460695468.

The previous prime is 1331331312109. The next prime is 1331331312137. The reversal of 1331331312133 is 3312131331331.

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 1331331312133 - 2²¹ = 1331329214981 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 (1331331312137) 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, 9935308233 + ... + 9935308366.

It is an arithmetic number, because the mean of its divisors is an integer number (337800482200).

Almost surely, 2^{1331331312133} is an apocalyptic number.

It is an amenable number.

1331331312133 is a deficient number, since it is larger than the sum of its proper divisors (19870616667).

1331331312133 is an equidigital number, since it uses as much as digits as its factorization.

1331331312133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19870616666.

The product of its digits is 4374, while the sum is 28.

Adding to 1331331312133 its reverse (3312131331331), we get a palindrome (4643462643464).

The spelling of 1331331312133 in words is "one trillion, three hundred thirty-one billion, three hundred thirty-one million, three hundred twelve thousand, one hundred thirty-three".