999923120313 has 16 divisors (see below), whose sum is σ = 1485296944320. Its totient is φ = 594118776384.

The previous prime is 999923120311. The next prime is 999923120453. The reversal of 999923120313 is 313021329999.

It is not a de Polignac number, because 999923120313 - 2¹ = 999923120311 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 442051531 + ... + 442053792.

It is an arithmetic number, because the mean of its divisors is an integer number (92831059020).

Almost surely, 2^999923120313 is an apocalyptic number.

It is an amenable number.

999923120313 is a deficient number, since it is larger than the sum of its proper divisors (485373824007).

999923120313 is a wasteful number, since it uses less digits than its factorization.

999923120313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884105368.

The product of its (nonzero) digits is 708588, while the sum is 51.

The spelling of 999923120313 in words is "nine hundred ninety-nine billion, nine hundred twenty-three million, one hundred twenty thousand, three hundred thirteen".