33216373 has 2 divisors, whose sum is σ = 33216374. Its totient is φ = 33216372.

The previous prime is 33216371. The next prime is 33216401. The reversal of 33216373 is 37361233.

It is an a-pointer prime, because the next prime (33216401) can be obtained adding 33216373 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32012964 + 1203409 = 5658^2 + 1097^2 .

It is a cyclic number.

It is not a de Polignac number, because 33216373 - 2¹ = 33216371 is a prime.

It is a super-2 number, since 2×33216373² = 2206654870550258, which contains 22 as substring.

Together with 33216371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33216371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16608186 + 16608187.

It is an arithmetic number, because the mean of its divisors is an integer number (16608187).

Almost surely, 2^33216373 is an apocalyptic number.

It is an amenable number.

33216373 is a deficient number, since it is larger than the sum of its proper divisors (1).

33216373 is an equidigital number, since it uses as much as digits as its factorization.

33216373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 28.

The square root of 33216373 is about 5763.3647290450. The cubic root of 33216373 is about 321.4529405533.

The spelling of 33216373 in words is "thirty-three million, two hundred sixteen thousand, three hundred seventy-three".