131238222 has 8 divisors (see below), whose sum is σ = 262476456. Its totient is φ = 43746072.

The previous prime is 131238209. The next prime is 131238227. The reversal of 131238222 is 222832131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

131238222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 131238192 and 131238201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131238227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10936513 + ... + 10936524.

It is an arithmetic number, because the mean of its divisors is an integer number (32809557).

Almost surely, 2^131238222 is an apocalyptic number.

131238222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131238222 is a wasteful number, since it uses less digits than its factorization.

131238222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21873042.

The product of its digits is 1152, while the sum is 24.

The square root of 131238222 is about 11455.9251917949. The cubic root of 131238222 is about 508.1829765352.

The spelling of 131238222 in words is "one hundred thirty-one million, two hundred thirty-eight thousand, two hundred twenty-two".