999982000031 has 20 divisors (see below), whose sum is σ = 1169097155232. Its totient is φ = 855275230656.

The previous prime is 999982000019. The next prime is 999982000051. The reversal of 999982000031 is 130000289999.

It is not a de Polignac number, because 999982000031 - 2¹⁰ = 999981999007 is a prime.

It is a super-2 number, since 2×999982000031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999982000051) 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 19 ways as a sum of consecutive naturals, for example, 661895 + ... + 1561431.

Almost surely, 2^999982000031 is an apocalyptic number.

999982000031 is a deficient number, since it is larger than the sum of its proper divisors (169115155201).

999982000031 is an frugal number, since it uses more digits than its factorization.

999982000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900028 (or 900007 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 50.

Adding to 999982000031 its sum of digits (50), we get a square (999982000081 = 999991²).

The spelling of 999982000031 in words is "nine hundred ninety-nine billion, nine hundred eighty-two million, thirty-one", and thus it is an aban number.