331229987 has 8 divisors (see below), whose sum is σ = 361791792. Its totient is φ = 300743200.

The previous prime is 331229959. The next prime is 331230037. The reversal of 331229987 is 789922133.

It is a happy number.

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 331229987 - 2¹² = 331225891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331229287) 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, 9308 + ... + 27369.

It is an arithmetic number, because the mean of its divisors is an integer number (45223974).

Almost surely, 2^331229987 is an apocalyptic number.

331229987 is a deficient number, since it is larger than the sum of its proper divisors (30561805).

331229987 is a wasteful number, since it uses less digits than its factorization.

331229987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37509.

The product of its digits is 163296, while the sum is 44.

The square root of 331229987 is about 18199.7249155035. The cubic root of 331229987 is about 691.8998171819.

The spelling of 331229987 in words is "three hundred thirty-one million, two hundred twenty-nine thousand, nine hundred eighty-seven".