131122233 has 20 divisors (see below), whose sum is σ = 213682128. Its totient is φ = 79467480.

The previous prime is 131122181. The next prime is 131122247. The reversal of 131122233 is 332221131.

It is not a de Polignac number, because 131122233 - 2⁶ = 131122169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131122133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72691 + ... + 74472.

Almost surely, 2^131122233 is an apocalyptic number.

It is an amenable number.

131122233 is a deficient number, since it is larger than the sum of its proper divisors (82559895).

131122233 is a wasteful number, since it uses less digits than its factorization.

131122233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147186 (or 147177 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 131122233 is about 11450.8616706342. The cubic root of 131122233 is about 508.0332208522.

Adding to 131122233 its reverse (332221131), we get a palindrome (463343364).

The spelling of 131122233 in words is "one hundred thirty-one million, one hundred twenty-two thousand, two hundred thirty-three".