133936811 has 2 divisors, whose sum is σ = 133936812. Its totient is φ = 133936810.

The previous prime is 133936783. The next prime is 133936813. The reversal of 133936811 is 118639331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133936811 is a prime.

Together with 133936813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133936813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66968405 + 66968406.

It is an arithmetic number, because the mean of its divisors is an integer number (66968406).

Almost surely, 2^133936811 is an apocalyptic number.

133936811 is a deficient number, since it is larger than the sum of its proper divisors (1).

133936811 is an equidigital number, since it uses as much as digits as its factorization.

133936811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 133936811 is about 11573.1072318544. The cubic root of 133936811 is about 511.6425460636.

The spelling of 133936811 in words is "one hundred thirty-three million, nine hundred thirty-six thousand, eight hundred eleven".