2113123147 has 2 divisors, whose sum is σ = 2113123148. Its totient is φ = 2113123146.

The previous prime is 2113123121. The next prime is 2113123241. The reversal of 2113123147 is 7413213112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2113123147 - 2²³ = 2104734539 is a prime.

It is not a weakly prime, because it can be changed into another prime (2113123547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056561573 + 1056561574.

It is an arithmetic number, because the mean of its divisors is an integer number (1056561574).

Almost surely, 2^2113123147 is an apocalyptic number.

2113123147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113123147 is an equidigital number, since it uses as much as digits as its factorization.

2113123147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 2113123147 is about 45968.7192229673. The cubic root of 2113123147 is about 1283.2411243057.

Adding to 2113123147 its reverse (7413213112), we get a palindrome (9526336259).

The spelling of 2113123147 in words is "two billion, one hundred thirteen million, one hundred twenty-three thousand, one hundred forty-seven".