131121133 has 8 divisors (see below), whose sum is σ = 154044576. Its totient is φ = 110031600.

The previous prime is 131121131. The next prime is 131121149. The reversal of 131121133 is 331121131.

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 131121133 - 2¹ = 131121131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121131) 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 7 ways as a sum of consecutive naturals, for example, 458323 + ... + 458608.

It is an arithmetic number, because the mean of its divisors is an integer number (19255572).

Almost surely, 2^131121133 is an apocalyptic number.

131121133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131121133 is a deficient number, since it is larger than the sum of its proper divisors (22923443).

131121133 is a wasteful number, since it uses less digits than its factorization.

131121133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916955.

The product of its digits is 54, while the sum is 16.

The square root of 131121133 is about 11450.8136392136. The cubic root of 131121133 is about 508.0318001979.

Adding to 131121133 its reverse (331121131), we get a palindrome (462242264).

The spelling of 131121133 in words is "one hundred thirty-one million, one hundred twenty-one thousand, one hundred thirty-three".