133249711 has 4 divisors (see below), whose sum is σ = 152285392. Its totient is φ = 114214032.

The previous prime is 133249651. The next prime is 133249759. The reversal of 133249711 is 117942331.

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

It is a cyclic number.

It is not a de Polignac number, because 133249711 - 2¹³ = 133241519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133249771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9517830 + ... + 9517843.

It is an arithmetic number, because the mean of its divisors is an integer number (38071348).

Almost surely, 2^133249711 is an apocalyptic number.

133249711 is a deficient number, since it is larger than the sum of its proper divisors (19035681).

133249711 is an equidigital number, since it uses as much as digits as its factorization.

133249711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19035680.

The product of its digits is 4536, while the sum is 31.

The square root of 133249711 is about 11543.3838626288. The cubic root of 133249711 is about 510.7661316226.

The spelling of 133249711 in words is "one hundred thirty-three million, two hundred forty-nine thousand, seven hundred eleven".