133113251 has 8 divisors (see below), whose sum is σ = 136604160. Its totient is φ = 129640392.

The previous prime is 133113241. The next prime is 133113283. The reversal of 133113251 is 152311331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133113251 - 2⁶ = 133113187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133113241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11126 + ... + 19748.

It is an arithmetic number, because the mean of its divisors is an integer number (17075520).

Almost surely, 2^133113251 is an apocalyptic number.

133113251 is a deficient number, since it is larger than the sum of its proper divisors (3490909).

133113251 is an equidigital number, since it uses as much as digits as its factorization.

133113251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9025.

The product of its digits is 270, while the sum is 20.

The square root of 133113251 is about 11537.4716034320. The cubic root of 133113251 is about 510.5917148524.

Adding to 133113251 its reverse (152311331), we get a palindrome (285424582).

The spelling of 133113251 in words is "one hundred thirty-three million, one hundred thirteen thousand, two hundred fifty-one".