131020244 has 6 divisors (see below), whose sum is σ = 229285434. Its totient is φ = 65510120.

The previous prime is 131020237. The next prime is 131020247. The reversal of 131020244 is 442020131.

It can be written as a sum of positive squares in only one way, i.e., 124322500 + 6697744 = 11150^2 + 2588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131020247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16377527 + ... + 16377534.

It is an arithmetic number, because the mean of its divisors is an integer number (38214239).

Almost surely, 2^131020244 is an apocalyptic number.

It is an amenable number.

131020244 is a deficient number, since it is larger than the sum of its proper divisors (98265190).

131020244 is a wasteful number, since it uses less digits than its factorization.

131020244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32755065 (or 32755063 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 131020244 is about 11446.4074713423. The cubic root of 131020244 is about 507.9014678595.

Adding to 131020244 its reverse (442020131), we get a palindrome (573040375).

The spelling of 131020244 in words is "one hundred thirty-one million, twenty thousand, two hundred forty-four".