2013191 has 4 divisors (see below), whose sum is σ = 2131632. Its totient is φ = 1894752.

The previous prime is 2013181. The next prime is 2013197. The reversal of 2013191 is 1913102.

It is a happy number.

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

It is not a de Polignac number, because 2013191 - 2⁶ = 2013127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 118423 = 2013191 / (2 + 0 + 1 + 3 + 1 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013197) 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, 59195 + ... + 59228.

It is an arithmetic number, because the mean of its divisors is an integer number (532908).

2^2013191 is an apocalyptic number.

2013191 is a deficient number, since it is larger than the sum of its proper divisors (118441).

2013191 is a wasteful number, since it uses less digits than its factorization.

2013191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118440.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 2013191 is about 1418.8696205078. The cubic root of 2013191 is about 126.2684918834.

Adding to 2013191 its reverse (1913102), we get a palindrome (3926293).

It can be divided in two parts, 2013 and 191, that multiplied together give a palindrome (384483).

The spelling of 2013191 in words is "two million, thirteen thousand, one hundred ninety-one".