133188141 has 4 divisors (see below), whose sum is σ = 177584192. Its totient is φ = 88792092.

The previous prime is 133188137. The next prime is 133188163. The reversal of 133188141 is 141881331.

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 not a de Polignac number, because 133188141 - 2² = 133188137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133188099 and 133188108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133181141) 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, 22198021 + ... + 22198026.

It is an arithmetic number, because the mean of its divisors is an integer number (44396048).

Almost surely, 2^133188141 is an apocalyptic number.

It is an amenable number.

133188141 is a deficient number, since it is larger than the sum of its proper divisors (44396051).

133188141 is an equidigital number, since it uses as much as digits as its factorization.

133188141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44396050.

The product of its digits is 2304, while the sum is 30.

The square root of 133188141 is about 11540.7166588562. The cubic root of 133188141 is about 510.6874504873.

The spelling of 133188141 in words is "one hundred thirty-three million, one hundred eighty-eight thousand, one hundred forty-one".