133061081 has 2 divisors, whose sum is σ = 133061082. Its totient is φ = 133061080.

The previous prime is 133061063. The next prime is 133061143. The reversal of 133061081 is 180160331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68740681 + 64320400 = 8291^2 + 8020^2 .

It is a cyclic number.

It is not a de Polignac number, because 133061081 - 2⁶ = 133061017 is a prime.

It is a super-2 number, since 2×133061081² = 35410502553777122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133061041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66530540 + 66530541.

It is an arithmetic number, because the mean of its divisors is an integer number (66530541).

Almost surely, 2^133061081 is an apocalyptic number.

It is an amenable number.

133061081 is a deficient number, since it is larger than the sum of its proper divisors (1).

133061081 is an equidigital number, since it uses as much as digits as its factorization.

133061081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 133061081 is about 11535.2104878931. The cubic root of 133061081 is about 510.5250021090.

The spelling of 133061081 in words is "one hundred thirty-three million, sixty-one thousand, eighty-one".