2131606 has 8 divisors (see below), whose sum is σ = 3236184. Its totient is φ = 1052880.

The previous prime is 2131603. The next prime is 2131609. The reversal of 2131606 is 6061312.

It is an interprime number because it is at equal distance from previous prime (2131603) and next prime (2131609).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6255 + ... + 6586.

It is an arithmetic number, because the mean of its divisors is an integer number (404523).

2^2131606 is an apocalyptic number.

2131606 is a deficient number, since it is larger than the sum of its proper divisors (1104578).

2131606 is a wasteful number, since it uses less digits than its factorization.

2131606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12926.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2131606 is about 1460.0020547931. The cubic root of 2131606 is about 128.6971643576.

Adding to 2131606 its reverse (6061312), we get a palindrome (8192918).

The spelling of 2131606 in words is "two million, one hundred thirty-one thousand, six hundred six".