Search a number
-
+
2105344201 = 8812389721
BaseRepresentation
bin111110101111101…
…0000000011001001
312102201120120022011
41331133100003021
513302432003301
6544524455521
7103113062512
oct17537200311
95381516264
102105344201
11990459294
124a90aa5a1
1327723c4cc
1415d87ba09
15c4c70a51
hex7d7d00c9

2105344201 has 4 divisors (see below), whose sum is σ = 2107734804. Its totient is φ = 2102953600.

The previous prime is 2105344183. The next prime is 2105344207. The reversal of 2105344201 is 1024435012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 661724176 + 1443620025 = 25724^2 + 37995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2105344201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105344207) 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, 1193980 + ... + 1195741.

It is an arithmetic number, because the mean of its divisors is an integer number (526933701).

Almost surely, 22105344201 is an apocalyptic number.

It is an amenable number.

2105344201 is a deficient number, since it is larger than the sum of its proper divisors (2390603).

2105344201 is an equidigital number, since it uses as much as digits as its factorization.

2105344201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390602.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2105344201 is about 45884.0299123780. The cubic root of 2105344201 is about 1281.6645420125.

Adding to 2105344201 its reverse (1024435012), we get a palindrome (3129779213).

The spelling of 2105344201 in words is "two billion, one hundred five million, three hundred forty-four thousand, two hundred one".

Divisors: 1 881 2389721 2105344201