133071907 has 2 divisors, whose sum is σ = 133071908. Its totient is φ = 133071906.

The previous prime is 133071893. The next prime is 133071929. The reversal of 133071907 is 709170331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133071907 is a prime.

It is not a weakly prime, because it can be changed into another prime (133071947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66535953 + 66535954.

It is an arithmetic number, because the mean of its divisors is an integer number (66535954).

Almost surely, 2^133071907 is an apocalyptic number.

133071907 is a deficient number, since it is larger than the sum of its proper divisors (1).

133071907 is an equidigital number, since it uses as much as digits as its factorization.

133071907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969, while the sum is 31.

The square root of 133071907 is about 11535.6797372327. The cubic root of 133071907 is about 510.5388473640.

It can be divided in two parts, 1330 and 71907, that added together give a palindrome (73237).

The spelling of 133071907 in words is "one hundred thirty-three million, seventy-one thousand, nine hundred seven".