131222344 has 32 divisors (see below), whose sum is σ = 269632800. Its totient is φ = 59374720.

The previous prime is 131222323. The next prime is 131222353. The reversal of 131222344 is 443222131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16692 + ... + 23260.

It is an arithmetic number, because the mean of its divisors is an integer number (8426025).

Almost surely, 2^131222344 is an apocalyptic number.

It is an amenable number.

131222344 is an abundant number, since it is smaller than the sum of its proper divisors (138410456).

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

131222344 is a wasteful number, since it uses less digits than its factorization.

131222344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6813 (or 6809 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 131222344 is about 11455.2321670056. The cubic root of 131222344 is about 508.1624813506.

Adding to 131222344 its reverse (443222131), we get a palindrome (574444475).

The spelling of 131222344 in words is "one hundred thirty-one million, two hundred twenty-two thousand, three hundred forty-four".