131889668 has 12 divisors (see below), whose sum is σ = 231494172. Its totient is φ = 65748480.

The previous prime is 131889647. The next prime is 131889679. The reversal of 131889668 is 866988131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57274624 + 74615044 = 7568^2 + 8638^2 .

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, 47573 + ... + 50268.

It is an arithmetic number, because the mean of its divisors is an integer number (19291181).

Almost surely, 2^131889668 is an apocalyptic number.

It is an amenable number.

131889668 is a deficient number, since it is larger than the sum of its proper divisors (99604504).

131889668 is a wasteful number, since it uses less digits than its factorization.

131889668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98182 (or 98180 counting only the distinct ones).

The product of its digits is 497664, while the sum is 50.

The square root of 131889668 is about 11484.3227053231. The cubic root of 131889668 is about 509.0224360095.

The spelling of 131889668 in words is "one hundred thirty-one million, eight hundred eighty-nine thousand, six hundred sixty-eight".