2113671 has 16 divisors (see below), whose sum is σ = 3241728. Its totient is φ = 1200000.

The previous prime is 2113669. The next prime is 2113679. The reversal of 2113671 is 1763112.

2113671 = 12⁴ + 13⁴ + ... + 25⁴.

It is not a de Polignac number, because 2113671 - 2¹ = 2113669 is a prime.

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

2113671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113679) 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, 5071 + ... + 5471.

It is an arithmetic number, because the mean of its divisors is an integer number (202608).

2^2113671 is an apocalyptic number.

2113671 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2113671 is a deficient number, since it is larger than the sum of its proper divisors (1128057).

2113671 is a wasteful number, since it uses less digits than its factorization.

2113671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662.

The product of its digits is 252, while the sum is 21.

The square root of 2113671 is about 1453.8469658117. The cubic root of 2113671 is about 128.3352013371.

Adding to 2113671 its reverse (1763112), we get a palindrome (3876783).

The spelling of 2113671 in words is "two million, one hundred thirteen thousand, six hundred seventy-one".