1001331232013 has 16 divisors (see below), whose sum is σ = 1160841284736. Its totient is φ = 845984632320.

The previous prime is 1001331232001. The next prime is 1001331232021. The reversal of 1001331232013 is 3102321331001.

It is a cyclic number.

It is not a de Polignac number, because 1001331232013 - 2²² = 1001327037709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001331232813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738568 + ... + 2241713.

It is an arithmetic number, because the mean of its divisors is an integer number (72552580296).

Almost surely, 2^{1001331232013} is an apocalyptic number.

It is an amenable number.

1001331232013 is a deficient number, since it is larger than the sum of its proper divisors (159510052723).

1001331232013 is an equidigital number, since it uses as much as digits as its factorization.

1001331232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980804.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1001331232013 its reverse (3102321331001), we get a palindrome (4103652563014).

The spelling of 1001331232013 in words is "one trillion, one billion, three hundred thirty-one million, two hundred thirty-two thousand, thirteen".