989910310123 has 24 divisors (see below), whose sum is σ = 1202269623552. Its totient is φ = 811147662864.

The previous prime is 989910310093. The next prime is 989910310133. The reversal of 989910310123 is 321013019989.

It is not a de Polignac number, because 989910310123 - 2⁹ = 989910309611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989910310133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1768186 + ... + 2259712.

It is an arithmetic number, because the mean of its divisors is an integer number (50094567648).

Almost surely, 2^989910310123 is an apocalyptic number.

989910310123 is a deficient number, since it is larger than the sum of its proper divisors (212359313429).

989910310123 is a wasteful number, since it uses less digits than its factorization.

989910310123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493351 (or 493344 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 989910310123 in words is "nine hundred eighty-nine billion, nine hundred ten million, three hundred ten thousand, one hundred twenty-three".