33861013 has 2 divisors, whose sum is σ = 33861014. Its totient is φ = 33861012.

The previous prime is 33861007. The next prime is 33861017. The reversal of 33861013 is 31016833.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20007729 + 13853284 = 4473^2 + 3722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33861013 is a prime.

It is a super-2 number, since 2×33861013² = 2293136402772338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33861017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16930506 + 16930507.

It is an arithmetic number, because the mean of its divisors is an integer number (16930507).

Almost surely, 2^33861013 is an apocalyptic number.

It is an amenable number.

33861013 is a deficient number, since it is larger than the sum of its proper divisors (1).

33861013 is an equidigital number, since it uses as much as digits as its factorization.

33861013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 33861013 is about 5819.0216531647. The cubic root of 33861013 is about 323.5191420295.

Adding to 33861013 its reverse (31016833), we get a palindrome (64877846).

The spelling of 33861013 in words is "thirty-three million, eight hundred sixty-one thousand, thirteen".