131606446 has 4 divisors (see below), whose sum is σ = 197409672. Its totient is φ = 65803222.

The previous prime is 131606443. The next prime is 131606459. The reversal of 131606446 is 644606131.

131606446 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131606443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32901610 + ... + 32901613.

It is an arithmetic number, because the mean of its divisors is an integer number (49352418).

Almost surely, 2^131606446 is an apocalyptic number.

131606446 is a deficient number, since it is larger than the sum of its proper divisors (65803226).

131606446 is an equidigital number, since it uses as much as digits as its factorization.

131606446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65803225.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 131606446 is about 11471.9852684703. The cubic root of 131606446 is about 508.6578138904.

The spelling of 131606446 in words is "one hundred thirty-one million, six hundred six thousand, four hundred forty-six".