131158668 has 12 divisors (see below), whose sum is σ = 306036920. Its totient is φ = 43719552.

The previous prime is 131158667. The next prime is 131158697. The reversal of 131158668 is 866851131.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (131158661) by changing a digit.

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, 5464933 + ... + 5464956.

Almost surely, 2^131158668 is an apocalyptic number.

It is an amenable number.

131158668 is an abundant number, since it is smaller than the sum of its proper divisors (174878252).

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

131158668 is a wasteful number, since it uses less digits than its factorization.

131158668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10929896 (or 10929894 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 131158668 is about 11452.4524884411. The cubic root of 131158668 is about 508.0802723089.

The spelling of 131158668 in words is "one hundred thirty-one million, one hundred fifty-eight thousand, six hundred sixty-eight".