30006000991 has 8 divisors (see below), whose sum is σ = 30813741504. Its totient is φ = 29205315360.

The previous prime is 30006000989. The next prime is 30006001057. The reversal of 30006000991 is 19900060003.

30006000991 = T₁₄₁₄₃₄ + T₁₄₁₄₃₅ + T₁₄₁₄₃₆.

It is a happy number.

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 30006000991 - 2¹ = 30006000989 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 (30006000911) 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, 1755100 + ... + 1772113.

It is an arithmetic number, because the mean of its divisors is an integer number (3851717688).

Almost surely, 2^30006000991 is an apocalyptic number.

30006000991 is the 141436-th centered triangular number.

30006000991 is a deficient number, since it is larger than the sum of its proper divisors (807740513).

30006000991 is a wasteful number, since it uses less digits than its factorization.

30006000991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527441.

The product of its (nonzero) digits is 1458, while the sum is 28.

Adding to 30006000991 its reverse (19900060003), we get a palindrome (49906060994).

The spelling of 30006000991 in words is "thirty billion, six million, nine hundred ninety-one", and thus it is an aban number.