33313481 has 2 divisors, whose sum is σ = 33313482. Its totient is φ = 33313480.

The previous prime is 33313471. The next prime is 33313507. The reversal of 33313481 is 18431333.

It is an a-pointer prime, because the next prime (33313507) can be obtained adding 33313481 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28729600 + 4583881 = 5360^2 + 2141^2 .

It is a cyclic number.

It is not a de Polignac number, because 33313481 - 2¹⁰ = 33312457 is a prime.

It is a super-2 number, since 2×33313481² = 2219576032674722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33313481.

It is not a weakly prime, because it can be changed into another prime (33313471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16656740 + 16656741.

It is an arithmetic number, because the mean of its divisors is an integer number (16656741).

Almost surely, 2^33313481 is an apocalyptic number.

It is an amenable number.

33313481 is a deficient number, since it is larger than the sum of its proper divisors (1).

33313481 is an equidigital number, since it uses as much as digits as its factorization.

33313481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 33313481 is about 5771.7831733356. The cubic root of 33313481 is about 321.7658914569.

The spelling of 33313481 in words is "thirty-three million, three hundred thirteen thousand, four hundred eighty-one".