2106143345 has 8 divisors (see below), whose sum is σ = 2676041064. Its totient is φ = 1585801984.

The previous prime is 2106143329. The next prime is 2106143353. The reversal of 2106143345 is 5433416012.

It can be written as a sum of positive squares in 4 ways, for example, as 279692176 + 1826451169 = 16724^2 + 42737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2106143345 - 2⁴ = 2106143329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12388994 + ... + 12389163.

It is an arithmetic number, because the mean of its divisors is an integer number (334505133).

Almost surely, 2^2106143345 is an apocalyptic number.

It is an amenable number.

2106143345 is a deficient number, since it is larger than the sum of its proper divisors (569897719).

2106143345 is a wasteful number, since it uses less digits than its factorization.

2106143345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24778179.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2106143345 is about 45892.7373883929. The cubic root of 2106143345 is about 1281.8266857232.

Adding to 2106143345 its reverse (5433416012), we get a palindrome (7539559357).

The spelling of 2106143345 in words is "two billion, one hundred six million, one hundred forty-three thousand, three hundred forty-five".