33213031009 has 2 divisors, whose sum is σ = 33213031010. Its totient is φ = 33213031008.

The previous prime is 33213030943. The next prime is 33213031031. The reversal of 33213031009 is 90013031233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22951341009 + 10261690000 = 151497^2 + 101300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33213031009 is a prime.

It is a super-2 number, since 2×33213031009² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33213031109) 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 as a sum of consecutive naturals, namely, 16606515504 + 16606515505.

It is an arithmetic number, because the mean of its divisors is an integer number (16606515505).

Almost surely, 2^33213031009 is an apocalyptic number.

It is an amenable number.

33213031009 is a deficient number, since it is larger than the sum of its proper divisors (1).

33213031009 is an equidigital number, since it uses as much as digits as its factorization.

33213031009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 25.

The spelling of 33213031009 in words is "thirty-three billion, two hundred thirteen million, thirty-one thousand, nine".