2113406971 has 4 divisors (see below), whose sum is σ = 2275976752. Its totient is φ = 1950837192.

The previous prime is 2113406923. The next prime is 2113407041. The reversal of 2113406971 is 1796043112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113406971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113406171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81284871 + ... + 81284896.

It is an arithmetic number, because the mean of its divisors is an integer number (568994188).

Almost surely, 2^2113406971 is an apocalyptic number.

2113406971 is a deficient number, since it is larger than the sum of its proper divisors (162569781).

2113406971 is a wasteful number, since it uses less digits than its factorization.

2113406971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162569780.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 2113406971 is about 45971.8062620994. The cubic root of 2113406971 is about 1283.2985745500.

The spelling of 2113406971 in words is "two billion, one hundred thirteen million, four hundred six thousand, nine hundred seventy-one".