133100231 has 16 divisors (see below), whose sum is σ = 148303008. Its totient is φ = 118435200.

The previous prime is 133100183. The next prime is 133100237. The reversal of 133100231 is 132001331.

It is a cyclic number.

It is not a de Polignac number, because 133100231 - 2⁶ = 133100167 is a prime.

It is a super-2 number, since 2×133100231² = 35431342984506722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133100237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196265 + ... + 196941.

It is an arithmetic number, because the mean of its divisors is an integer number (9268938).

Almost surely, 2^133100231 is an apocalyptic number.

133100231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133100231 is a deficient number, since it is larger than the sum of its proper divisors (15202777).

133100231 is a wasteful number, since it uses less digits than its factorization.

133100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 133100231 is about 11536.9073412245. The cubic root of 133100231 is about 510.5750670711.

Adding to 133100231 its reverse (132001331), we get a palindrome (265101562).

It can be divided in two parts, 133100 and 231, that added together give a palindrome (133331).

The spelling of 133100231 in words is "one hundred thirty-three million, one hundred thousand, two hundred thirty-one".