133723907 has 2 divisors, whose sum is σ = 133723908. Its totient is φ = 133723906.

The previous prime is 133723903. The next prime is 133723927. The reversal of 133723907 is 709327331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133723907 - 2² = 133723903 is a prime.

It is not a weakly prime, because it can be changed into another prime (133723903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66861953 + 66861954.

It is an arithmetic number, because the mean of its divisors is an integer number (66861954).

Almost surely, 2^133723907 is an apocalyptic number.

133723907 is a deficient number, since it is larger than the sum of its proper divisors (1).

133723907 is an equidigital number, since it uses as much as digits as its factorization.

133723907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 133723907 is about 11563.9053524318. The cubic root of 133723907 is about 511.3713024498.

The spelling of 133723907 in words is "one hundred thirty-three million, seven hundred twenty-three thousand, nine hundred seven".