131043664 has 20 divisors (see below), whose sum is σ = 254772756. Its totient is φ = 65295872.

The previous prime is 131043659. The next prime is 131043683. The reversal of 131043664 is 466340131.

It can be written as a sum of positive squares in 2 ways, for example, as 127509264 + 3534400 = 11292^2 + 1880^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9289 + ... + 18664.

Almost surely, 2^131043664 is an apocalyptic number.

It is an amenable number.

131043664 is a deficient number, since it is larger than the sum of its proper divisors (123729092).

131043664 is a wasteful number, since it uses less digits than its factorization.

131043664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28254 (or 28248 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 131043664 is about 11447.4304540364. The cubic root of 131043664 is about 507.9317286887.

Adding to 131043664 its reverse (466340131), we get a palindrome (597383795).

The spelling of 131043664 in words is "one hundred thirty-one million, forty-three thousand, six hundred sixty-four".