2113047 has 20 divisors (see below), whose sum is σ = 3325080. Its totient is φ = 1333584.

The previous prime is 2113043. The next prime is 2113087. The reversal of 2113047 is 7403112.

It is not a de Polignac number, because 2113047 - 2² = 2113043 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113043) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 853 + ... + 2225.

It is an arithmetic number, because the mean of its divisors is an integer number (166254).

2^2113047 is an apocalyptic number.

2113047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2113047 is a deficient number, since it is larger than the sum of its proper divisors (1212033).

2113047 is a wasteful number, since it uses less digits than its factorization.

2113047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404 (or 1395 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 2113047 is about 1453.6323469158. The cubic root of 2113047 is about 128.3225710133.

Adding to 2113047 its reverse (7403112), we get a palindrome (9516159).

The spelling of 2113047 in words is "two million, one hundred thirteen thousand, forty-seven".