133210161 has 24 divisors (see below), whose sum is σ = 220244544. Its totient is φ = 76001760.

The previous prime is 133210139. The next prime is 133210171. The reversal of 133210161 is 161012331.

It is not a de Polignac number, because 133210161 - 2⁹ = 133209649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133210111) 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, 54046 + ... + 56456.

It is an arithmetic number, because the mean of its divisors is an integer number (9176856).

Almost surely, 2^133210161 is an apocalyptic number.

It is an amenable number.

133210161 is a deficient number, since it is larger than the sum of its proper divisors (87034383).

133210161 is a wasteful number, since it uses less digits than its factorization.

133210161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301 (or 3298 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 133210161 is about 11541.6706329716. The cubic root of 133210161 is about 510.7155929277.

Adding to 133210161 its reverse (161012331), we get a palindrome (294222492).

The spelling of 133210161 in words is "one hundred thirty-three million, two hundred ten thousand, one hundred sixty-one".