133731113 has 2 divisors, whose sum is σ = 133731114. Its totient is φ = 133731112.

The previous prime is 133731089. The next prime is 133731149. The reversal of 133731113 is 311137331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81775849 + 51955264 = 9043^2 + 7208^2 .

It is a cyclic number.

It is not a de Polignac number, because 133731113 - 2¹⁰ = 133730089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (133731173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66865556 + 66865557.

It is an arithmetic number, because the mean of its divisors is an integer number (66865557).

Almost surely, 2^133731113 is an apocalyptic number.

It is an amenable number.

133731113 is a deficient number, since it is larger than the sum of its proper divisors (1).

133731113 is an equidigital number, since it uses as much as digits as its factorization.

133731113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567, while the sum is 23.

The square root of 133731113 is about 11564.2169211754. The cubic root of 133731113 is about 511.3804877319.

Adding to 133731113 its reverse (311137331), we get a palindrome (444868444).

The spelling of 133731113 in words is "one hundred thirty-three million, seven hundred thirty-one thousand, one hundred thirteen".