2103591 has 16 divisors (see below), whose sum is σ = 3238400. Its totient is φ = 1189728.

The previous prime is 2103589. The next prime is 2103601. The reversal of 2103591 is 1953012.

It is not a de Polignac number, because 2103591 - 2¹ = 2103589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830 + ... + 2748.

It is an arithmetic number, because the mean of its divisors is an integer number (202400).

2^2103591 is an apocalyptic number.

2103591 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2103591 is a deficient number, since it is larger than the sum of its proper divisors (1134809).

2103591 is a wasteful number, since it uses less digits than its factorization.

2103591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 2103591 is about 1450.3761581052. The cubic root of 2103591 is about 128.1308679446.

The spelling of 2103591 in words is "two million, one hundred three thousand, five hundred ninety-one".