2100243113 has 2 divisors, whose sum is σ = 2100243114. Its totient is φ = 2100243112.

The previous prime is 2100243107. The next prime is 2100243143. The reversal of 2100243113 is 3113420012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1624654249 + 475588864 = 40307^2 + 21808^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100243113 - 2⁴ = 2100243097 is a prime.

It is a super-2 number, since 2×2100243113² = 8822042267407861538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100243091 and 2100243100.

It is not a weakly prime, because it can be changed into another prime (2100243143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050121556 + 1050121557.

It is an arithmetic number, because the mean of its divisors is an integer number (1050121557).

Almost surely, 2^2100243113 is an apocalyptic number.

It is an amenable number.

2100243113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100243113 is an equidigital number, since it uses as much as digits as its factorization.

2100243113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2100243113 is about 45828.4094530892. The cubic root of 2100243113 is about 1280.6285798176.

Adding to 2100243113 its reverse (3113420012), we get a palindrome (5213663125).

The spelling of 2100243113 in words is "two billion, one hundred million, two hundred forty-three thousand, one hundred thirteen".