133681043 has 2 divisors, whose sum is σ = 133681044. Its totient is φ = 133681042.

The previous prime is 133681003. The next prime is 133681049. The reversal of 133681043 is 340186331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133681043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133680997 and 133681015.

It is not a weakly prime, because it can be changed into another prime (133681049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66840521 + 66840522.

It is an arithmetic number, because the mean of its divisors is an integer number (66840522).

Almost surely, 2^133681043 is an apocalyptic number.

133681043 is a deficient number, since it is larger than the sum of its proper divisors (1).

133681043 is an equidigital number, since it uses as much as digits as its factorization.

133681043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 133681043 is about 11562.0518507746. The cubic root of 133681043 is about 511.3166581147.

The spelling of 133681043 in words is "one hundred thirty-three million, six hundred eighty-one thousand, forty-three".