1331321123403 has 24 divisors (see below), whose sum is σ = 2079460289088. Its totient is φ = 817565574912.

The previous prime is 1331321123381. The next prime is 1331321123423. The reversal of 1331321123403 is 3043211231331.

1331321123403 is a `hidden beast` number, since 1 + 3 + 3 + 132 + 1 + 123 + 403 = 666.

It is not a de Polignac number, because 1331321123403 - 2⁶ = 1331321123339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331321123423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92561376 + ... + 92575757.

It is an arithmetic number, because the mean of its divisors is an integer number (86644178712).

Almost surely, 2^{1331321123403} is an apocalyptic number.

1331321123403 is a deficient number, since it is larger than the sum of its proper divisors (748139165685).

1331321123403 is a wasteful number, since it uses less digits than its factorization.

1331321123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185137203 (or 185137200 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 1331321123403 its reverse (3043211231331), we get a palindrome (4374532354734).

The spelling of 1331321123403 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, four hundred three".