131334663 has 4 divisors (see below), whose sum is σ = 175112888. Its totient is φ = 87556440.

The previous prime is 131334661. The next prime is 131334667. The reversal of 131334663 is 366433131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131334663 - 2¹ = 131334661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131334663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131334661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21889108 + ... + 21889113.

It is an arithmetic number, because the mean of its divisors is an integer number (43778222).

Almost surely, 2^131334663 is an apocalyptic number.

131334663 is a deficient number, since it is larger than the sum of its proper divisors (43778225).

131334663 is an equidigital number, since it uses as much as digits as its factorization.

131334663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43778224.

The product of its digits is 11664, while the sum is 30.

The square root of 131334663 is about 11460.1336379643. The cubic root of 131334663 is about 508.3074262410.

Adding to 131334663 its reverse (366433131), we get a palindrome (497767794).

The spelling of 131334663 in words is "one hundred thirty-one million, three hundred thirty-four thousand, six hundred sixty-three".