30312222133 has 4 divisors (see below), whose sum is σ = 30379733100. Its totient is φ = 30244711168.

The previous prime is 30312222091. The next prime is 30312222137. The reversal of 30312222133 is 33122221303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14458138564 + 15854083569 = 120242^2 + 125913^2 .

It is a cyclic number.

It is not a de Polignac number, because 30312222133 - 2¹³ = 30312213941 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 (30312222137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33754810 + ... + 33755707.

It is an arithmetic number, because the mean of its divisors is an integer number (7594933275).

Almost surely, 2^30312222133 is an apocalyptic number.

It is an amenable number.

30312222133 is a deficient number, since it is larger than the sum of its proper divisors (67510967).

30312222133 is an equidigital number, since it uses as much as digits as its factorization.

30312222133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67510966.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 30312222133 its reverse (33122221303), we get a palindrome (63434443436).

The spelling of 30312222133 in words is "thirty billion, three hundred twelve million, two hundred twenty-two thousand, one hundred thirty-three".