1331321113123 has 4 divisors (see below), whose sum is σ = 1343102716008. Its totient is φ = 1319539510240.

The previous prime is 1331321113121. The next prime is 1331321113219. The reversal of 1331321113123 is 3213111231331.

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 1331321113123 - 2¹ = 1331321113121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331321113121) 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, 5890801273 + ... + 5890801498.

It is an arithmetic number, because the mean of its divisors is an integer number (335775679002).

Almost surely, 2^{1331321113123} is an apocalyptic number.

1331321113123 is a deficient number, since it is larger than the sum of its proper divisors (11781602885).

1331321113123 is a wasteful number, since it uses less digits than its factorization.

1331321113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11781602884.

The product of its digits is 972, while the sum is 25.

Adding to 1331321113123 its reverse (3213111231331), we get a palindrome (4544432344454).

The spelling of 1331321113123 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-one million, one hundred thirteen thousand, one hundred twenty-three".