133911001 has 4 divisors (see below), whose sum is σ = 153041152. Its totient is φ = 114780852.

The previous prime is 133910999. The next prime is 133911007. The reversal of 133911001 is 100119331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133911001 - 2¹ = 133910999 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 133911001.

It is not an unprimeable number, because it can be changed into a prime (133911007) 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, 9565065 + ... + 9565078.

It is an arithmetic number, because the mean of its divisors is an integer number (38260288).

Almost surely, 2^133911001 is an apocalyptic number.

It is an amenable number.

133911001 is a deficient number, since it is larger than the sum of its proper divisors (19130151).

133911001 is an equidigital number, since it uses as much as digits as its factorization.

133911001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19130150.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 133911001 is about 11571.9920929804. The cubic root of 133911001 is about 511.6096789666.

The spelling of 133911001 in words is "one hundred thirty-three million, nine hundred eleven thousand, one".