988331 has 4 divisors (see below), whose sum is σ = 991392. Its totient is φ = 985272.

The previous prime is 988321. The next prime is 988343. The reversal of 988331 is 133889.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988331 is a prime.

It is a super-2 number, since 2×988331² = 1953596331122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (988321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980 + ... + 1713.

It is an arithmetic number, because the mean of its divisors is an integer number (247848).

2⁹⁸⁸³³¹ is an apocalyptic number.

988331 is a deficient number, since it is larger than the sum of its proper divisors (3061).

988331 is a wasteful number, since it uses less digits than its factorization.

988331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060.

The product of its digits is 5184, while the sum is 32.

The square root of 988331 is about 994.1483792674. The cubic root of 988331 is about 99.6095104976.

The spelling of 988331 in words is "nine hundred eighty-eight thousand, three hundred thirty-one".