131306663 has 8 divisors (see below), whose sum is σ = 138673920. Its totient is φ = 123985080.

The previous prime is 131306653. The next prime is 131306677. The reversal of 131306663 is 366603131.

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

It is a cyclic number.

It is not a de Polignac number, because 131306663 - 2¹⁶ = 131241127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131306653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5423 + ... + 17088.

It is an arithmetic number, because the mean of its divisors is an integer number (17334240).

Almost surely, 2^131306663 is an apocalyptic number.

131306663 is a deficient number, since it is larger than the sum of its proper divisors (7367257).

131306663 is a wasteful number, since it uses less digits than its factorization.

131306663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22837.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 131306663 is about 11458.9119466030. The cubic root of 131306663 is about 508.2713006689.

Adding to 131306663 its reverse (366603131), we get a palindrome (497909794).

The spelling of 131306663 in words is "one hundred thirty-one million, three hundred six thousand, six hundred sixty-three".