133211746 has 4 divisors (see below), whose sum is σ = 199817622. Its totient is φ = 66605872.

The previous prime is 133211713. The next prime is 133211753. The reversal of 133211746 is 647112331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 647112331 = 67 ⋅9658393.

It can be written as a sum of positive squares in only one way, i.e., 120143521 + 13068225 = 10961^2 + 3615^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33302935 + ... + 33302938.

Almost surely, 2^133211746 is an apocalyptic number.

133211746 is a deficient number, since it is larger than the sum of its proper divisors (66605876).

133211746 is an equidigital number, since it uses as much as digits as its factorization.

133211746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66605875.

The product of its digits is 3024, while the sum is 28.

The square root of 133211746 is about 11541.7392970037. The cubic root of 133211746 is about 510.7176185015.

The spelling of 133211746 in words is "one hundred thirty-three million, two hundred eleven thousand, seven hundred forty-six".