133107865 has 12 divisors (see below), whose sum is σ = 175571172. Its totient is φ = 96805280.

The previous prime is 133107839. The next prime is 133107869. The reversal of 133107865 is 568701331.

It can be written as a sum of positive squares in 2 ways, for example, as 63952009 + 69155856 = 7997^2 + 8316^2 .

It is not a de Polignac number, because 133107865 - 2⁹ = 133107353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133107865.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133107869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109402 + ... + 110611.

It is an arithmetic number, because the mean of its divisors is an integer number (14630931).

Almost surely, 2^133107865 is an apocalyptic number.

It is an amenable number.

133107865 is a deficient number, since it is larger than the sum of its proper divisors (42463307).

133107865 is a wasteful number, since it uses less digits than its factorization.

133107865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220040 (or 220029 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 133107865 is about 11537.2381877120. The cubic root of 133107865 is about 510.5848282751.

The spelling of 133107865 in words is "one hundred thirty-three million, one hundred seven thousand, eight hundred sixty-five".