999984000031 has 2 divisors, whose sum is σ = 999984000032. Its totient is φ = 999984000030.

The previous prime is 999983999951. The next prime is 999984000133. The reversal of 999984000031 is 130000489999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999984000031 - 2¹⁵ = 999983967263 is a prime.

It is a super-2 number, since 2×999984000031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999984000931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499992000015 + 499992000016.

It is an arithmetic number, because the mean of its divisors is an integer number (499992000016).

Almost surely, 2^999984000031 is an apocalyptic number.

999984000031 is a deficient number, since it is larger than the sum of its proper divisors (1).

999984000031 is an equidigital number, since it uses as much as digits as its factorization.

999984000031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 52.

The spelling of 999984000031 in words is "nine hundred ninety-nine billion, nine hundred eighty-four million, thirty-one", and thus it is an aban number.