131436668 has 24 divisors (see below), whose sum is σ = 251521200. Its totient is φ = 59601920.

The previous prime is 131436631. The next prime is 131436677. The reversal of 131436668 is 866634131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16430 + ... + 23082.

It is an arithmetic number, because the mean of its divisors is an integer number (10480050).

Almost surely, 2^131436668 is an apocalyptic number.

It is an amenable number.

131436668 is a deficient number, since it is larger than the sum of its proper divisors (120084532).

131436668 is a wasteful number, since it uses less digits than its factorization.

131436668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117 (or 7115 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 131436668 is about 11464.5832021927. The cubic root of 131436668 is about 508.4389895821.

The spelling of 131436668 in words is "one hundred thirty-one million, four hundred thirty-six thousand, six hundred sixty-eight".