1331330133 has 32 divisors (see below), whose sum is σ = 2167383040. Its totient is φ = 709948800.

The previous prime is 1331330113. The next prime is 1331330149. The reversal of 1331330133 is 3310331331.

It is not a de Polignac number, because 1331330133 - 2⁵ = 1331330101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331330113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1833 + ... + 51633.

It is an arithmetic number, because the mean of its divisors is an integer number (67730720).

Almost surely, 2^1331330133 is an apocalyptic number.

It is an amenable number.

1331330133 is a deficient number, since it is larger than the sum of its proper divisors (836052907).

1331330133 is a wasteful number, since it uses less digits than its factorization.

1331330133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49897.

The product of its (nonzero) digits is 729, while the sum is 21.

The square root of 1331330133 is about 36487.3969063292. The cubic root of 1331330133 is about 1100.0909382119.

Adding to 1331330133 its reverse (3310331331), we get a palindrome (4641661464).

The spelling of 1331330133 in words is "one billion, three hundred thirty-one million, three hundred thirty thousand, one hundred thirty-three".