999430123303 has 4 divisors (see below), whose sum is σ = 1052031708760. Its totient is φ = 946828537848.

The previous prime is 999430123243. The next prime is 999430123331. The reversal of 999430123303 is 303321034999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 999430123303 - 2²¹ = 999428026151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999430121303) by changing a digit.

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, 26300792700 + ... + 26300792737.

It is an arithmetic number, because the mean of its divisors is an integer number (263007927190).

Almost surely, 2^999430123303 is an apocalyptic number.

999430123303 is a deficient number, since it is larger than the sum of its proper divisors (52601585457).

999430123303 is a wasteful number, since it uses less digits than its factorization.

999430123303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52601585456.

The product of its (nonzero) digits is 472392, while the sum is 46.

The spelling of 999430123303 in words is "nine hundred ninety-nine billion, four hundred thirty million, one hundred twenty-three thousand, three hundred three".