2105263123 has 8 divisors (see below), whose sum is σ = 2120347296. Its totient is φ = 2090212800.

The previous prime is 2105263093. The next prime is 2105263129. The reversal of 2105263123 is 3213625012.

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 2105263123 - 2²⁹ = 1568392211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105263129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123658 + ... + 139648.

It is an arithmetic number, because the mean of its divisors is an integer number (265043412).

Almost surely, 2^2105263123 is an apocalyptic number.

2105263123 is a deficient number, since it is larger than the sum of its proper divisors (15084173).

2105263123 is a wasteful number, since it uses less digits than its factorization.

2105263123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16925.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2105263123 is about 45883.1463938558. The cubic root of 2105263123 is about 1281.6480892583.

Adding to 2105263123 its reverse (3213625012), we get a palindrome (5318888135).

The spelling of 2105263123 in words is "two billion, one hundred five million, two hundred sixty-three thousand, one hundred twenty-three".