131131222 has 16 divisors (see below), whose sum is σ = 204679872. Its totient is φ = 62957440.

The previous prime is 131131199. The next prime is 131131279. The reversal of 131131222 is 222131131.

It is a junction number, because it is equal to n+sod(n) for n = 131131196 and 131131205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8179 + ... + 18142.

It is an arithmetic number, because the mean of its divisors is an integer number (12792492).

Almost surely, 2^131131222 is an apocalyptic number.

131131222 is a deficient number, since it is larger than the sum of its proper divisors (73548650).

131131222 is a wasteful number, since it uses less digits than its factorization.

131131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26423.

The product of its digits is 72, while the sum is 16.

The square root of 131131222 is about 11451.2541671207. The cubic root of 131131222 is about 508.0448298834.

Adding to 131131222 its reverse (222131131), we get a palindrome (353262353).

Subtracting 131131222 from its reverse (222131131), we obtain a palindrome (90999909).

The spelling of 131131222 in words is "one hundred thirty-one million, one hundred thirty-one thousand, two hundred twenty-two".