3999030143321 has 16 divisors (see below), whose sum is σ = 4143317346000. Its totient is φ = 3855171763968.

The previous prime is 3999030143291. The next prime is 3999030143359. The reversal of 3999030143321 is 1233410309993.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 79897240921 + 3919132902400 = 282661^2 + 1979680^2 .

It is a cyclic number.

It is not a de Polignac number, because 3999030143321 - 2¹⁰ = 3999030142297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3999030142321) 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, 86257655 + ... + 86304003.

It is an arithmetic number, because the mean of its divisors is an integer number (258957334125).

Almost surely, 2^{3999030143321} is an apocalyptic number.

It is an amenable number.

3999030143321 is a deficient number, since it is larger than the sum of its proper divisors (144287202679).

3999030143321 is a wasteful number, since it uses less digits than its factorization.

3999030143321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50908.

The product of its (nonzero) digits is 472392, while the sum is 47.

The spelling of 3999030143321 in words is "three trillion, nine hundred ninety-nine billion, thirty million, one hundred forty-three thousand, three hundred twenty-one".