331213133 has 8 divisors (see below), whose sum is σ = 353652288. Its totient is φ = 309443904.

The previous prime is 331213117. The next prime is 331213139. The reversal of 331213133 is 331312133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331213133 - 2⁴ = 331213117 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 (331213139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166460 + ... + 168437.

It is an arithmetic number, because the mean of its divisors is an integer number (44206536).

Almost surely, 2^331213133 is an apocalyptic number.

It is an amenable number.

331213133 is a deficient number, since it is larger than the sum of its proper divisors (22439155).

331213133 is a wasteful number, since it uses less digits than its factorization.

331213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334963.

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

The square root of 331213133 is about 18199.2618806368. The cubic root of 331213133 is about 691.8880816530. Note that the first 3 decimals are identical.

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

The spelling of 331213133 in words is "three hundred thirty-one million, two hundred thirteen thousand, one hundred thirty-three".