131330664 has 24 divisors (see below), whose sum is σ = 355687410. Its totient is φ = 43776864.

The previous prime is 131330629. The next prime is 131330687. The reversal of 131330664 is 466033131.

It can be written as a sum of positive squares in only one way, i.e., 76422564 + 54908100 = 8742^2 + 7410^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 911947 + ... + 912090.

Almost surely, 2^131330664 is an apocalyptic number.

It is an amenable number.

131330664 is an abundant number, since it is smaller than the sum of its proper divisors (224356746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131330664 is a wasteful number, since it uses less digits than its factorization.

131330664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824049 (or 1824042 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 131330664 is about 11459.9591622309. The cubic root of 131330664 is about 508.3022670495.

Adding to 131330664 its reverse (466033131), we get a palindrome (597363795).

The spelling of 131330664 in words is "one hundred thirty-one million, three hundred thirty thousand, six hundred sixty-four".