131222244 has 24 divisors (see below), whose sum is σ = 307777120. Its totient is φ = 43513344.

The previous prime is 131222243. The next prime is 131222249. The reversal of 131222244 is 442222131.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 131222244.

It is not an unprimeable number, because it can be changed into a prime (131222243) 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, 26014 + ... + 30645.

Almost surely, 2^131222244 is an apocalyptic number.

It is an amenable number.

131222244 is an abundant number, since it is smaller than the sum of its proper divisors (176554876).

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

131222244 is a wasteful number, since it uses less digits than its factorization.

131222244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56859 (or 56857 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 131222244 is about 11455.2278021871. The cubic root of 131222244 is about 508.1623522663.

Adding to 131222244 its reverse (442222131), we get a palindrome (573444375).

The spelling of 131222244 in words is "one hundred thirty-one million, two hundred twenty-two thousand, two hundred forty-four".