1331321132403 has 40 divisors (see below), whose sum is σ = 1991347142400. Its totient is φ = 886395357360.

The previous prime is 1331321132359. The next prime is 1331321132429. The reversal of 1331321132403 is 3042311231331.

1331321132403 is a `hidden beast` number, since 1 + 3 + 3 + 13 + 211 + 32 + 403 = 666.

It is not a de Polignac number, because 1331321132403 - 2⁸ = 1331321132147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1331321132483) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 377463826 + ... + 377467352.

It is an arithmetic number, because the mean of its divisors is an integer number (49783678560).

Almost surely, 2^{1331321132403} is an apocalyptic number.

1331321132403 is a deficient number, since it is larger than the sum of its proper divisors (660026009997).

1331321132403 is a wasteful number, since it uses less digits than its factorization.

1331321132403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8269 (or 8260 counting only the distinct ones).

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

Adding to 1331321132403 its reverse (3042311231331), we get a palindrome (4373632363734).

The spelling of 1331321132403 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-one million, one hundred thirty-two thousand, four hundred three".