2099131 has 4 divisors (see below), whose sum is σ = 2147992. Its totient is φ = 2050272.

The previous prime is 2099129. The next prime is 2099147. The reversal of 2099131 is 1319902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1319902 = 2 ⋅659951.

It is a cyclic number.

It is not a de Polignac number, because 2099131 - 2¹ = 2099129 is a prime.

It is a super-2 number, since 2×2099131² = 8812701910322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2099096 and 2099105.

It is not an unprimeable number, because it can be changed into a prime (2099191) 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, 24366 + ... + 24451.

It is an arithmetic number, because the mean of its divisors is an integer number (536998).

2^2099131 is an apocalyptic number.

2099131 is a deficient number, since it is larger than the sum of its proper divisors (48861).

2099131 is an equidigital number, since it uses as much as digits as its factorization.

2099131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48860.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 2099131 is about 1448.8378101085. The cubic root of 2099131 is about 128.0402501999.

The spelling of 2099131 in words is "two million, ninety-nine thousand, one hundred thirty-one".