131222132 has 24 divisors (see below), whose sum is σ = 249527040. Its totient is φ = 60151680.

The previous prime is 131222131. The next prime is 131222141. The reversal of 131222132 is 231222131.

It is a self number, because there is not a number n which added to its sum of digits gives 131222132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25493 + ... + 30204.

It is an arithmetic number, because the mean of its divisors is an integer number (10396960).

Almost surely, 2^131222132 is an apocalyptic number.

It is an amenable number.

131222132 is a deficient number, since it is larger than the sum of its proper divisors (118304908).

131222132 is a wasteful number, since it uses less digits than its factorization.

131222132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55751 (or 55749 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 131222132 is about 11455.2229135884. Note that the first 3 decimals coincide. The cubic root of 131222132 is about 508.1622076917.

Adding to 131222132 its reverse (231222131), we get a palindrome (362444263).

Subtracting 131222132 from its reverse (231222131), we obtain a palindrome (99999999).

The spelling of 131222132 in words is "one hundred thirty-one million, two hundred twenty-two thousand, one hundred thirty-two".