990112312 has 32 divisors (see below), whose sum is σ = 2147241600. Its totient is φ = 419219424.

The previous prime is 990112309. The next prime is 990112313. The reversal of 990112312 is 213211099.

990112312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990112313) 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, 101862 + ... + 111157.

It is an arithmetic number, because the mean of its divisors is an integer number (67101300).

Almost surely, 2^990112312 is an apocalyptic number.

It is an amenable number.

990112312 is an abundant number, since it is smaller than the sum of its proper divisors (1157129288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990112312 is a wasteful number, since it uses less digits than its factorization.

990112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213115 (or 213111 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 990112312 is about 31466.0501493276. The cubic root of 990112312 is about 996.6931810015.

The spelling of 990112312 in words is "nine hundred ninety million, one hundred twelve thousand, three hundred twelve".