30120311133 has 20 divisors (see below), whose sum is σ = 49084952928. Its totient is φ = 18254733480.

The previous prime is 30120311129. The next prime is 30120311141. The reversal of 30120311133 is 33111302103.

It is a happy number.

30120311133 is a `hidden beast` number, since 301 + 20 + 311 + 1 + 33 = 666.

It is not a de Polignac number, because 30120311133 - 2² = 30120311129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120311113) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16901641 + ... + 16903422.

Almost surely, 2^30120311133 is an apocalyptic number.

30120311133 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

30120311133 is a deficient number, since it is larger than the sum of its proper divisors (18964641795).

30120311133 is a wasteful number, since it uses less digits than its factorization.

30120311133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33805086 (or 33805077 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 30120311133 its reverse (33111302103), we get a palindrome (63231613236).

The spelling of 30120311133 in words is "thirty billion, one hundred twenty million, three hundred eleven thousand, one hundred thirty-three".