133101091 has 4 divisors (see below), whose sum is σ = 133317432. Its totient is φ = 132884752.

The previous prime is 133101083. The next prime is 133101103. The reversal of 133101091 is 190101331.

It is a happy number.

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 133101091 - 2³ = 133101083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133111091) 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, 107245 + ... + 108478.

It is an arithmetic number, because the mean of its divisors is an integer number (33329358).

Almost surely, 2^133101091 is an apocalyptic number.

133101091 is a deficient number, since it is larger than the sum of its proper divisors (216341).

133101091 is an equidigital number, since it uses as much as digits as its factorization.

133101091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216340.

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

The square root of 133101091 is about 11536.9446128514. The cubic root of 133101091 is about 510.5761667276.

The spelling of 133101091 in words is "one hundred thirty-three million, one hundred one thousand, ninety-one".