1001131331303 has 4 divisors (see below), whose sum is σ = 1001133352560. Its totient is φ = 1001129310048.

The previous prime is 1001131331251. The next prime is 1001131331323. The reversal of 1001131331303 is 3031331311001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001131331303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001131331323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291926 + ... + 1444812.

It is an arithmetic number, because the mean of its divisors is an integer number (250283338140).

Almost surely, 2^{1001131331303} is an apocalyptic number.

1001131331303 is a deficient number, since it is larger than the sum of its proper divisors (2021257).

1001131331303 is an equidigital number, since it uses as much as digits as its factorization.

1001131331303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021256.

The product of its (nonzero) digits is 243, while the sum is 20.

Adding to 1001131331303 its reverse (3031331311001), we get a palindrome (4032462642304).

The spelling of 1001131331303 in words is "one trillion, one billion, one hundred thirty-one million, three hundred thirty-one thousand, three hundred three".