1331330321403 has 24 divisors (see below), whose sum is σ = 1942134242048. Its totient is φ = 878741274672.

The previous prime is 1331330321401. The next prime is 1331330321467. The reversal of 1331330321403 is 3041230331331.

1331330321403 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 330 + 321 + 4 + 0 + 3 = 666.

It is not a de Polignac number, because 1331330321403 - 2¹ = 1331330321401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331330321401) 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, 4076376 + ... + 4390842.

Almost surely, 2^{1331330321403} is an apocalyptic number.

1331330321403 is a deficient number, since it is larger than the sum of its proper divisors (610803920645).

1331330321403 is a wasteful number, since it uses less digits than its factorization.

1331330321403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319143 (or 319140 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 1331330321403 its reverse (3041230331331), we get a palindrome (4372560652734).

The spelling of 1331330321403 in words is "one trillion, three hundred thirty-one billion, three hundred thirty million, three hundred twenty-one thousand, four hundred three".