131311652 has 12 divisors (see below), whose sum is σ = 237719580. Its totient is φ = 63391776.

The previous prime is 131311627. The next prime is 131311657. The reversal of 131311652 is 256113131.

It can be written as a sum of positive squares in 2 ways, for example, as 80389156 + 50922496 = 8966^2 + 7136^2 .

It is not an unprimeable number, because it can be changed into a prime (131311657) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 565883 + ... + 566114.

It is an arithmetic number, because the mean of its divisors is an integer number (19809965).

Almost surely, 2^131311652 is an apocalyptic number.

It is an amenable number.

131311652 is a deficient number, since it is larger than the sum of its proper divisors (106407928).

131311652 is a wasteful number, since it uses less digits than its factorization.

131311652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132030 (or 1132028 counting only the distinct ones).

The product of its digits is 540, while the sum is 23.

The square root of 131311652 is about 11459.1296353606. The cubic root of 131311652 is about 508.2777378477.

Adding to 131311652 its reverse (256113131), we get a palindrome (387424783).

The spelling of 131311652 in words is "one hundred thirty-one million, three hundred eleven thousand, six hundred fifty-two".