133237161 has 24 divisors (see below), whose sum is σ = 196088256. Its totient is φ = 87162720.

The previous prime is 133237129. The next prime is 133237219. The reversal of 133237161 is 161732331.

It is not a de Polignac number, because 133237161 - 2⁵ = 133237129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133237121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128716 + ... + 129746.

It is an arithmetic number, because the mean of its divisors is an integer number (8170344).

Almost surely, 2^133237161 is an apocalyptic number.

It is an amenable number.

133237161 is a deficient number, since it is larger than the sum of its proper divisors (62851095).

133237161 is a wasteful number, since it uses less digits than its factorization.

133237161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1290 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 133237161 is about 11542.8402483964. The cubic root of 133237161 is about 510.7500957749.

Adding to 133237161 its reverse (161732331), we get a palindrome (294969492).

The spelling of 133237161 in words is "one hundred thirty-three million, two hundred thirty-seven thousand, one hundred sixty-one".