30311100133 has 4 divisors (see below), whose sum is σ = 30454754848. Its totient is φ = 30167445420.

The previous prime is 30311100107. The next prime is 30311100139. The reversal of 30311100133 is 33100111303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33100111303 = 7 ⋅4728587329.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30311100133 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 (30311100139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71827041 + ... + 71827462.

It is an arithmetic number, because the mean of its divisors is an integer number (7613688712).

Almost surely, 2^30311100133 is an apocalyptic number.

It is an amenable number.

30311100133 is a deficient number, since it is larger than the sum of its proper divisors (143654715).

30311100133 is a wasteful number, since it uses less digits than its factorization.

30311100133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143654714.

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 30311100133 its reverse (33100111303), we get a palindrome (63411211436).

The spelling of 30311100133 in words is "thirty billion, three hundred eleven million, one hundred thousand, one hundred thirty-three".