133131131 has 8 divisors (see below), whose sum is σ = 161100000. Its totient is φ = 107399808.

The previous prime is 133131127. The next prime is 133131137. The reversal of 133131131 is 131131331.

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 133131131 - 2² = 133131127 is a prime.

It is a super-2 number, since 2×133131131² = 35447796082678322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133131137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559256 + ... + 559493.

It is an arithmetic number, because the mean of its divisors is an integer number (20137500).

Almost surely, 2^133131131 is an apocalyptic number.

133131131 is a deficient number, since it is larger than the sum of its proper divisors (27968869).

133131131 is a wasteful number, since it uses less digits than its factorization.

133131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118773.

The product of its digits is 81, while the sum is 17.

The square root of 133131131 is about 11538.2464438926. The cubic root of 133131131 is about 510.6145750136.

Adding to 133131131 its reverse (131131331), we get a palindrome (264262462).

The spelling of 133131131 in words is "one hundred thirty-three million, one hundred thirty-one thousand, one hundred thirty-one".