331312133 has 16 divisors (see below), whose sum is σ = 356073984. Its totient is φ = 307169280.

The previous prime is 331312129. The next prime is 331312141. The reversal of 331312133 is 331213133.

It is a cyclic number.

It is not a de Polignac number, because 331312133 - 2² = 331312129 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 (331314133) 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, 545516 + ... + 546122.

It is an arithmetic number, because the mean of its divisors is an integer number (22254624).

Almost surely, 2^331312133 is an apocalyptic number.

It is an amenable number.

331312133 is a deficient number, since it is larger than the sum of its proper divisors (24761851).

331312133 is a wasteful number, since it uses less digits than its factorization.

331312133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its digits is 486, while the sum is 20.

The square root of 331312133 is about 18201.9815679502. The cubic root of 331312133 is about 691.9570101764.

Adding to 331312133 its reverse (331213133), we get a palindrome (662525266).

The spelling of 331312133 in words is "three hundred thirty-one million, three hundred twelve thousand, one hundred thirty-three".