2113491 has 16 divisors (see below), whose sum is σ = 3088800. Its totient is φ = 1279488.

The previous prime is 2113471. The next prime is 2113511. The reversal of 2113491 is 1943112.

It is an interprime number because it is at equal distance from previous prime (2113471) and next prime (2113511).

It is not a de Polignac number, because 2113491 - 2⁵ = 2113459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2113421) 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, 765 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (193050).

2^2113491 is an apocalyptic number.

2113491 is a deficient number, since it is larger than the sum of its proper divisors (975309).

2113491 is a wasteful number, since it uses less digits than its factorization.

2113491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478.

The product of its digits is 216, while the sum is 21.

The square root of 2113491 is about 1453.7850597664. The cubic root of 2113491 is about 128.3315582296.

The spelling of 2113491 in words is "two million, one hundred thirteen thousand, four hundred ninety-one".