2143453123 has 8 divisors (see below), whose sum is σ = 2453372000. Its totient is φ = 1834462080.

The previous prime is 2143453087. The next prime is 2143453139. The reversal of 2143453123 is 3213543412.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143453123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143453091 and 2143453100.

It is not an unprimeable number, because it can be changed into a prime (2143450123) 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, 226998 + ... + 236251.

It is an arithmetic number, because the mean of its divisors is an integer number (306671500).

Almost surely, 2^2143453123 is an apocalyptic number.

2143453123 is a deficient number, since it is larger than the sum of its proper divisors (309918877).

2143453123 is an equidigital number, since it uses as much as digits as its factorization.

2143453123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463917.

The product of its digits is 8640, while the sum is 28.

The square root of 2143453123 is about 46297.4418623751. The cubic root of 2143453123 is about 1289.3515004583.

Adding to 2143453123 its reverse (3213543412), we get a palindrome (5356996535).

The spelling of 2143453123 in words is "two billion, one hundred forty-three million, four hundred fifty-three thousand, one hundred twenty-three".