2130243123 has 16 divisors (see below), whose sum is σ = 3008603520. Its totient is φ = 1336089216.

The previous prime is 2130243107. The next prime is 2130243139. The reversal of 2130243123 is 3213420312.

It is an interprime number because it is at equal distance from previous prime (2130243107) and next prime (2130243139).

It is not a de Polignac number, because 2130243123 - 2⁴ = 2130243107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2130243123.

It is not an unprimeable number, because it can be changed into a prime (2130243173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149608 + ... + 163226.

It is an arithmetic number, because the mean of its divisors is an integer number (188037720).

Almost surely, 2^2130243123 is an apocalyptic number.

2130243123 is a deficient number, since it is larger than the sum of its proper divisors (878360397).

2130243123 is a wasteful number, since it uses less digits than its factorization.

2130243123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16706.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2130243123 is about 46154.5569039504. The cubic root of 2130243123 is about 1286.6973030087.

Adding to 2130243123 its reverse (3213420312), we get a palindrome (5343663435).

The spelling of 2130243123 in words is "two billion, one hundred thirty million, two hundred forty-three thousand, one hundred twenty-three".