131635606 has 4 divisors (see below), whose sum is σ = 197453412. Its totient is φ = 65817802.

The previous prime is 131635583. The next prime is 131635619. The reversal of 131635606 is 606536131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 606536131 = 29 ⋅20915039.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32908900 + ... + 32908903.

It is an arithmetic number, because the mean of its divisors is an integer number (49363353).

Almost surely, 2^131635606 is an apocalyptic number.

131635606 is a deficient number, since it is larger than the sum of its proper divisors (65817806).

131635606 is an equidigital number, since it uses as much as digits as its factorization.

131635606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65817805.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 131635606 is about 11473.2561202128. The cubic root of 131635606 is about 508.6953788349.

It can be divided in two parts, 13163 and 5606, that added together give a square (18769 = 137²).

The spelling of 131635606 in words is "one hundred thirty-one million, six hundred thirty-five thousand, six hundred six".