33130031321 has 4 divisors (see below), whose sum is σ = 34873717200. Its totient is φ = 31386345444.

The previous prime is 33130031309. The next prime is 33130031323. The reversal of 33130031321 is 12313003133.

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: 12313003133 = 179 ⋅68787727.

It is a cyclic number.

It is not a de Polignac number, because 33130031321 - 2²⁶ = 33062922457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33130031293 and 33130031302.

It is not an unprimeable number, because it can be changed into a prime (33130031323) 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, 871842911 + ... + 871842948.

It is an arithmetic number, because the mean of its divisors is an integer number (8718429300).

Almost surely, 2^33130031321 is an apocalyptic number.

It is an amenable number.

33130031321 is a deficient number, since it is larger than the sum of its proper divisors (1743685879).

33130031321 is a wasteful number, since it uses less digits than its factorization.

33130031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743685878.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 33130031321 its reverse (12313003133), we get a palindrome (45443034454).

It can be divided in two parts, 3313003132 and 1, that added together give a palindrome (3313003133).

The spelling of 33130031321 in words is "thirty-three billion, one hundred thirty million, thirty-one thousand, three hundred twenty-one".