2131139 has 8 divisors (see below), whose sum is σ = 2222640. Its totient is φ = 2041600.

The previous prime is 2131133. The next prime is 2131141. The reversal of 2131139 is 9311312.

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

It is a cyclic number.

It is not a de Polignac number, because 2131139 - 2¹² = 2127043 is a prime.

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 2131139.

It is not an unprimeable number, because it can be changed into a prime (2131133) 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 7 ways as a sum of consecutive naturals, for example, 1979 + ... + 2859.

It is an arithmetic number, because the mean of its divisors is an integer number (277830).

2^2131139 is an apocalyptic number.

2131139 is a deficient number, since it is larger than the sum of its proper divisors (91501).

2131139 is an equidigital number, since it uses as much as digits as its factorization.

2131139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its digits is 162, while the sum is 20.

The square root of 2131139 is about 1459.8421147508. The cubic root of 2131139 is about 128.6877651901.

The spelling of 2131139 in words is "two million, one hundred thirty-one thousand, one hundred thirty-nine".