131013224 has 8 divisors (see below), whose sum is σ = 245649810. Its totient is φ = 65506608.

The previous prime is 131013149. The next prime is 131013229. The reversal of 131013224 is 422310131.

It can be written as a sum of positive squares in only one way, i.e., 82264900 + 48748324 = 9070^2 + 6982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (131013229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8188319 + ... + 8188334.

Almost surely, 2^131013224 is an apocalyptic number.

It is an amenable number.

131013224 is a deficient number, since it is larger than the sum of its proper divisors (114636586).

131013224 is a wasteful number, since it uses less digits than its factorization.

131013224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16376659 (or 16376655 counting only the distinct ones).

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

The square root of 131013224 is about 11446.1008208036. The cubic root of 131013224 is about 507.8923966608.

Adding to 131013224 its reverse (422310131), we get a palindrome (553323355).

The spelling of 131013224 in words is "one hundred thirty-one million, thirteen thousand, two hundred twenty-four".