990231330232 has 16 divisors (see below), whose sum is σ = 1857702248640. Its totient is φ = 494844063936.

The previous prime is 990231330199. The next prime is 990231330259. The reversal of 990231330232 is 232033132099.

It is a junction number, because it is equal to n+sod(n) for n = 990231330191 and 990231330200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33934653 + ... + 33963820.

It is an arithmetic number, because the mean of its divisors is an integer number (116106390540).

Almost surely, 2^990231330232 is an apocalyptic number.

It is an amenable number.

990231330232 is a deficient number, since it is larger than the sum of its proper divisors (867470918408).

990231330232 is a wasteful number, since it uses less digits than its factorization.

990231330232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67900302 (or 67900298 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 37.

The spelling of 990231330232 in words is "nine hundred ninety billion, two hundred thirty-one million, three hundred thirty thousand, two hundred thirty-two".