2113139 has 4 divisors (see below), whose sum is σ = 2415024. Its totient is φ = 1811256.

The previous prime is 2113129. The next prime is 2113147. The reversal of 2113139 is 9313112.

2113139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-2113139 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 2113139.

It is not an unprimeable number, because it can be changed into a prime (2113109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150932 + ... + 150945.

It is an arithmetic number, because the mean of its divisors is an integer number (603756).

2^2113139 is an apocalyptic number.

2113139 is a deficient number, since it is larger than the sum of its proper divisors (301885).

2113139 is an equidigital number, since it uses as much as digits as its factorization.

2113139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301884.

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

The square root of 2113139 is about 1453.6639914368. The cubic root of 2113139 is about 128.3244333327.

The spelling of 2113139 in words is "two million, one hundred thirteen thousand, one hundred thirty-nine".