131311634 has 8 divisors (see below), whose sum is σ = 200683980. Its totient is φ = 64416976.

The previous prime is 131311627. The next prime is 131311657. The reversal of 131311634 is 436113131.

It can be written as a sum of positive squares in 2 ways, for example, as 123765625 + 7546009 = 11125^2 + 2747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 619289 + ... + 619500.

Almost surely, 2^131311634 is an apocalyptic number.

131311634 is a deficient number, since it is larger than the sum of its proper divisors (69372346).

131311634 is a wasteful number, since it uses less digits than its factorization.

131311634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238844.

The product of its digits is 648, while the sum is 23.

The square root of 131311634 is about 11459.1288499606. The cubic root of 131311634 is about 508.2777146231.

Adding to 131311634 its reverse (436113131), we get a palindrome (567424765).

The spelling of 131311634 in words is "one hundred thirty-one million, three hundred eleven thousand, six hundred thirty-four".