133303081 has 2 divisors, whose sum is σ = 133303082. Its totient is φ = 133303080.

The previous prime is 133303067. The next prime is 133303087. The reversal of 133303081 is 180303331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75846681 + 57456400 = 8709^2 + 7580^2 .

It is a cyclic number.

It is not a de Polignac number, because 133303081 - 2⁹ = 133302569 is a prime.

It is a super-2 number, since 2×133303081² = 35539422808185122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133303087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66651540 + 66651541.

It is an arithmetic number, because the mean of its divisors is an integer number (66651541).

Almost surely, 2^133303081 is an apocalyptic number.

It is an amenable number.

133303081 is a deficient number, since it is larger than the sum of its proper divisors (1).

133303081 is an equidigital number, since it uses as much as digits as its factorization.

133303081 is an evil number, because the sum of its binary digits is even.

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

The square root of 133303081 is about 11545.6953450193. The cubic root of 133303081 is about 510.8343142592.

The spelling of 133303081 in words is "one hundred thirty-three million, three hundred three thousand, eighty-one".