2109342131 has 4 divisors (see below), whose sum is σ = 2271599232. Its totient is φ = 1947085032.

The previous prime is 2109342113. The next prime is 2109342143. The reversal of 2109342131 is 1312439012.

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

It is a cyclic number.

It is not a de Polignac number, because 2109342131 - 2²² = 2105147827 is a prime.

It is a super-2 number, since 2×2109342131² = 8898648451223242322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2109342131.

It is not an unprimeable number, because it can be changed into a prime (2109342101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81128531 + ... + 81128556.

It is an arithmetic number, because the mean of its divisors is an integer number (567899808).

Almost surely, 2^2109342131 is an apocalyptic number.

2109342131 is a deficient number, since it is larger than the sum of its proper divisors (162257101).

2109342131 is a wasteful number, since it uses less digits than its factorization.

2109342131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162257100.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2109342131 is about 45927.5748434424. The cubic root of 2109342131 is about 1282.4752986160.

The spelling of 2109342131 in words is "two billion, one hundred nine million, three hundred forty-two thousand, one hundred thirty-one".