999931141 has 24 divisors (see below), whose sum is σ = 1146860064.
Its totient is φ = 864531360.
The previous prime is 999931139. The next prime is 999931171. The reversal of 999931141 is 141139999.
It is the 12910-th star number.
It is not a de Polignac number, because 999931141 - 21 = 999931139 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 999931091 and 999931100.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (999931171) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1320535 + ... + 1321291.
It is an arithmetic number, because the mean of its divisors is an integer number (47785836).
Almost surely, 2999931141 is an apocalyptic number.
It is an amenable number.
999931141 is a deficient number, since it is larger than the sum of its proper divisors (146928923).
999931141 is a wasteful number, since it uses less digits than its factorization.
999931141 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1041 (or 1018 counting only the distinct ones).
The product of its digits is 78732, while the sum is 46.
The square root of 999931141 is about 31621.6878265535.
The cubic root of 999931141 is about 999.9770464731.
The spelling of 999931141 in words is "nine hundred ninety-nine million, nine hundred thirty-one thousand, one hundred forty-one".