33301381 has 2 divisors, whose sum is σ = 33301382. Its totient is φ = 33301380.

The previous prime is 33301349. The next prime is 33301391. The reversal of 33301381 is 18310333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16769025 + 16532356 = 4095^2 + 4066^2 .

It is an emirp because it is prime and its reverse (18310333) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33301381 - 2⁵ = 33301349 is a prime.

It is a super-2 number, since 2×33301381² = 2217963953014322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2049070 and since 33301381 and 2049070 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33301321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16650690 + 16650691.

It is an arithmetic number, because the mean of its divisors is an integer number (16650691).

Almost surely, 2^33301381 is an apocalyptic number.

It is an amenable number.

33301381 is a deficient number, since it is larger than the sum of its proper divisors (1).

33301381 is an equidigital number, since it uses as much as digits as its factorization.

33301381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 33301381 is about 5770.7348752130. The cubic root of 33301381 is about 321.7269298649.

The spelling of 33301381 in words is "thirty-three million, three hundred one thousand, three hundred eighty-one".