999923120312 has 32 divisors (see below), whose sum is σ = 1973736210000. Its totient is φ = 473598897408.

The previous prime is 999923120311. The next prime is 999923120453. The reversal of 999923120312 is 213021329999.

It is a happy number.

999923120312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999923120311) 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, 1159364 + ... + 1828652.

Almost surely, 2^999923120312 is an apocalyptic number.

It is an amenable number.

999923120312 is a deficient number, since it is larger than the sum of its proper divisors (973813089688).

999923120312 is a wasteful number, since it uses less digits than its factorization.

999923120312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679143 (or 679139 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 50.

The spelling of 999923120312 in words is "nine hundred ninety-nine billion, nine hundred twenty-three million, one hundred twenty thousand, three hundred twelve".