30321223133 has 4 divisors (see below), whose sum is σ = 30736582428. Its totient is φ = 29905863840.

The previous prime is 30321223109. The next prime is 30321223159. The reversal of 30321223133 is 33132212303.

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 9785759929 + 20535463204 = 98923^2 + 143302^2 .

It is a cyclic number.

It is not a de Polignac number, because 30321223133 - 2²⁴ = 30304445917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30321223099 and 30321223108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321223193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207679538 + ... + 207679683.

It is an arithmetic number, because the mean of its divisors is an integer number (7684145607).

Almost surely, 2^30321223133 is an apocalyptic number.

It is an amenable number.

30321223133 is a deficient number, since it is larger than the sum of its proper divisors (415359295).

30321223133 is an equidigital number, since it uses as much as digits as its factorization.

30321223133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415359294.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 30321223133 its reverse (33132212303), we get a palindrome (63453435436).

The spelling of 30321223133 in words is "thirty billion, three hundred twenty-one million, two hundred twenty-three thousand, one hundred thirty-three".