1001331133 has 16 divisors (see below), whose sum is σ = 1100376576. Its totient is φ = 903651840.

The previous prime is 1001331131. The next prime is 1001331137. The reversal of 1001331133 is 3311331001.

It is a cyclic number.

It is not a de Polignac number, because 1001331133 - 2¹ = 1001331131 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 (1001331131) 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, 1159860 + ... + 1160722.

It is an arithmetic number, because the mean of its divisors is an integer number (68773536).

Almost surely, 2^1001331133 is an apocalyptic number.

It is an amenable number.

1001331133 is a deficient number, since it is larger than the sum of its proper divisors (99045443).

1001331133 is a wasteful number, since it uses less digits than its factorization.

1001331133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 1001331133 is about 31643.8166629754. The cubic root of 1001331133 is about 1000.4435142660.

Adding to 1001331133 its reverse (3311331001), we get a palindrome (4312662134).

It can be divided in two parts, 1001 and 331133, that multiplied together give a palindrome (331464133).

The spelling of 1001331133 in words is "one billion, one million, three hundred thirty-one thousand, one hundred thirty-three".