30123100133 has 4 divisors (see below), whose sum is σ = 34426400160. Its totient is φ = 25819800108.

The previous prime is 30123100109. The next prime is 30123100157. The reversal of 30123100133 is 33100132103.

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.

It is an interprime number because it is at equal distance from previous prime (30123100109) and next prime (30123100157).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30123100133 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 (30123100333) 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, 2151650003 + ... + 2151650016.

It is an arithmetic number, because the mean of its divisors is an integer number (8606600040).

Almost surely, 2^30123100133 is an apocalyptic number.

It is an amenable number.

30123100133 is a deficient number, since it is larger than the sum of its proper divisors (4303300027).

30123100133 is an equidigital number, since it uses as much as digits as its factorization.

30123100133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303300026.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30123100133 its reverse (33100132103), we get a palindrome (63223232236).

The spelling of 30123100133 in words is "thirty billion, one hundred twenty-three million, one hundred thousand, one hundred thirty-three".