2106131 has 4 divisors (see below), whose sum is σ = 2217000. Its totient is φ = 1995264.

The previous prime is 2106107. The next prime is 2106149. The reversal of 2106131 is 1316012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106131 is a prime.

It is a super-2 number, since 2×2106131² = 8871575578322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55406 + ... + 55443.

It is an arithmetic number, because the mean of its divisors is an integer number (554250).

2^2106131 is an apocalyptic number.

2106131 is a deficient number, since it is larger than the sum of its proper divisors (110869).

2106131 is a wasteful number, since it uses less digits than its factorization.

2106131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110868.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2106131 is about 1451.2515288536. The cubic root of 2106131 is about 128.1824181275.

The spelling of 2106131 in words is "two million, one hundred six thousand, one hundred thirty-one".