30031303209991 has 8 divisors (see below), whose sum is σ = 32986328469120. Its totient is φ = 27213720986232.

The previous prime is 30031303209961. The next prime is 30031303210031. The reversal of 30031303209991 is 19990230313003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30031303209991 - 2¹¹ = 30031303207943 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 (30031303209911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34360758385 + ... + 34360759258.

It is an arithmetic number, because the mean of its divisors is an integer number (4123291058640).

Almost surely, 2^{30031303209991} is an apocalyptic number.

30031303209991 is a deficient number, since it is larger than the sum of its proper divisors (2955025259129).

30031303209991 is a wasteful number, since it uses less digits than its factorization.

30031303209991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68721517685.

The product of its (nonzero) digits is 118098, while the sum is 43.

The spelling of 30031303209991 in words is "thirty trillion, thirty-one billion, three hundred three million, two hundred nine thousand, nine hundred ninety-one".