990118331 has 8 divisors (see below), whose sum is σ = 1027200000. Its totient is φ = 953358120.

The previous prime is 990118321. The next prime is 990118333. The reversal of 990118331 is 133811099.

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 990118331 - 2¹⁰ = 990117307 is a prime.

It is a super-2 number, since 2×990118331² = 1960668618764451122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 990118291 and 990118300.

It is not an unprimeable number, because it can be changed into a prime (990118333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74081 + ... + 86418.

It is an arithmetic number, because the mean of its divisors is an integer number (128400000).

Almost surely, 2^990118331 is an apocalyptic number.

990118331 is a deficient number, since it is larger than the sum of its proper divisors (37081669).

990118331 is a wasteful number, since it uses less digits than its factorization.

990118331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160729.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 990118331 is about 31466.1457919460. The cubic root of 990118331 is about 996.6952006660.

The spelling of 990118331 in words is "nine hundred ninety million, one hundred eighteen thousand, three hundred thirty-one".