1331003131021 has 8 divisors (see below), whose sum is σ = 1354239209600. Its totient is φ = 1307926751040.

The previous prime is 1331003130971. The next prime is 1331003131091. The reversal of 1331003131021 is 1201313001331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331003131021 - 2³¹ = 1328855647373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331003131021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331003131091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39907836 + ... + 39941173.

It is an arithmetic number, because the mean of its divisors is an integer number (169279901200).

Almost surely, 2^{1331003131021} is an apocalyptic number.

It is an amenable number.

1331003131021 is a deficient number, since it is larger than the sum of its proper divisors (23236078579).

1331003131021 is an equidigital number, since it uses as much as digits as its factorization.

1331003131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79849299.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1331003131021 its reverse (1201313001331), we get a palindrome (2532316132352).

The spelling of 1331003131021 in words is "one trillion, three hundred thirty-one billion, three million, one hundred thirty-one thousand, twenty-one".