331222987 has 8 divisors (see below), whose sum is σ = 335258000. Its totient is φ = 327206304.

The previous prime is 331222981. The next prime is 331223017. The reversal of 331222987 is 789222133.

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 331222987 - 2³ = 331222979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331222981) 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, 33688 + ... + 42394.

It is an arithmetic number, because the mean of its divisors is an integer number (41907250).

Almost surely, 2^331222987 is an apocalyptic number.

331222987 is a deficient number, since it is larger than the sum of its proper divisors (4035013).

331222987 is a wasteful number, since it uses less digits than its factorization.

331222987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9165.

The product of its digits is 36288, while the sum is 37.

The square root of 331222987 is about 18199.5326038885. The cubic root of 331222987 is about 691.8949430934.

The spelling of 331222987 in words is "three hundred thirty-one million, two hundred twenty-two thousand, nine hundred eighty-seven".