133011481 has 2 divisors, whose sum is σ = 133011482. Its totient is φ = 133011480.

The previous prime is 133011467. The next prime is 133011491. The reversal of 133011481 is 184110331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92256025 + 40755456 = 9605^2 + 6384^2 .

It is a cyclic number.

It is not a de Polignac number, because 133011481 - 2⁵ = 133011449 is a prime.

It is a super-2 number, since 2×133011481² = 35384108155626722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133011491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66505740 + 66505741.

It is an arithmetic number, because the mean of its divisors is an integer number (66505741).

Almost surely, 2^133011481 is an apocalyptic number.

It is an amenable number.

133011481 is a deficient number, since it is larger than the sum of its proper divisors (1).

133011481 is an equidigital number, since it uses as much as digits as its factorization.

133011481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 133011481 is about 11533.0603484071. The cubic root of 133011481 is about 510.4615595984.

The spelling of 133011481 in words is "one hundred thirty-three million, eleven thousand, four hundred eighty-one".