131606812 has 6 divisors (see below), whose sum is σ = 230311928. Its totient is φ = 65803404.

The previous prime is 131606801. The next prime is 131606899. The reversal of 131606812 is 218606131.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16450848 + ... + 16450855.

Almost surely, 2^131606812 is an apocalyptic number.

It is an amenable number.

131606812 is a deficient number, since it is larger than the sum of its proper divisors (98705116).

131606812 is a wasteful number, since it uses less digits than its factorization.

131606812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32901707 (or 32901705 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 131606812 is about 11472.0012203626. The cubic root of 131606812 is about 508.6582854189.

Subtracting from 131606812 its sum of digits (28), we obtain a square (131606784 = 11472²).

The spelling of 131606812 in words is "one hundred thirty-one million, six hundred six thousand, eight hundred twelve".