133123231131 has 32 divisors (see below), whose sum is σ = 208161792000. Its totient is φ = 74808110880.

The previous prime is 133123231097. The next prime is 133123231159. The reversal of 133123231131 is 131132321331.

It is not a de Polignac number, because 133123231131 - 2⁹ = 133123230619 is a prime.

It is a super-2 number, since 2×133123231131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133123231181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2229231 + ... + 2288168.

It is an arithmetic number, because the mean of its divisors is an integer number (6505056000).

Almost surely, 2^133123231131 is an apocalyptic number.

133123231131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133123231131 is a deficient number, since it is larger than the sum of its proper divisors (75038560869).

133123231131 is a wasteful number, since it uses less digits than its factorization.

133123231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517479.

The product of its digits is 972, while the sum is 24.

Adding to 133123231131 its reverse (131132321331), we get a palindrome (264255552462).

The spelling of 133123231131 in words is "one hundred thirty-three billion, one hundred twenty-three million, two hundred thirty-one thousand, one hundred thirty-one".