30011083981 has 8 divisors (see below), whose sum is σ = 30609622400. Its totient is φ = 29418012000.

The previous prime is 30011083967. The next prime is 30011083987. The reversal of 30011083981 is 18938011003.

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 30011083981 - 2¹⁹ = 30010559693 is a prime.

It is a super-2 number, since 2×30011083981² (a number of 22 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 (30011083987) 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, 1355520 + ... + 1377481.

It is an arithmetic number, because the mean of its divisors is an integer number (3826202800).

Almost surely, 2^30011083981 is an apocalyptic number.

It is an amenable number.

30011083981 is a deficient number, since it is larger than the sum of its proper divisors (598538419).

30011083981 is a wasteful number, since it uses less digits than its factorization.

30011083981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733219.

The product of its (nonzero) digits is 5184, while the sum is 34.

Adding to 30011083981 its reverse (18938011003), we get a palindrome (48949094984).

The spelling of 30011083981 in words is "thirty billion, eleven million, eighty-three thousand, nine hundred eighty-one".