133210705 has 4 divisors (see below), whose sum is σ = 159852852. Its totient is φ = 106568560.

The previous prime is 133210703. The next prime is 133210711. The reversal of 133210705 is 507012331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23882769 + 109327936 = 4887^2 + 10456^2 .

It is not a de Polignac number, because 133210705 - 2¹ = 133210703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133210703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13321066 + ... + 13321075.

It is an arithmetic number, because the mean of its divisors is an integer number (39963213).

Almost surely, 2^133210705 is an apocalyptic number.

It is an amenable number.

133210705 is a deficient number, since it is larger than the sum of its proper divisors (26642147).

133210705 is an equidigital number, since it uses as much as digits as its factorization.

133210705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26642146.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 133210705 is about 11541.6941997265. The cubic root of 133210705 is about 510.7162881422.

The spelling of 133210705 in words is "one hundred thirty-three million, two hundred ten thousand, seven hundred five".