131222422 has 8 divisors (see below), whose sum is σ = 208412136. Its totient is φ = 61751712.

The previous prime is 131222353. The next prime is 131222423. The reversal of 131222422 is 224222131.

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

It is a self number, because there is not a number n which added to its sum of digits gives 131222422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222423) 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, 1929708 + ... + 1929775.

It is an arithmetic number, because the mean of its divisors is an integer number (26051517).

Almost surely, 2^131222422 is an apocalyptic number.

131222422 is a deficient number, since it is larger than the sum of its proper divisors (77189714).

131222422 is a wasteful number, since it uses less digits than its factorization.

131222422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859502.

The product of its digits is 384, while the sum is 19.

The square root of 131222422 is about 11455.2355715629. The cubic root of 131222422 is about 508.1625820364.

Adding to 131222422 its reverse (224222131), we get a palindrome (355444553).

The spelling of 131222422 in words is "one hundred thirty-one million, two hundred twenty-two thousand, four hundred twenty-two".