2152343123 has 16 divisors (see below), whose sum is σ = 2741598720. Its totient is φ = 1644955776.

The previous prime is 2152343119. The next prime is 2152343129. The reversal of 2152343123 is 3213432512.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2152343123 - 2² = 2152343119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2152343092 and 2152343101.

It is not an unprimeable number, because it can be changed into a prime (2152343129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473711 + ... + 478232.

It is an arithmetic number, because the mean of its divisors is an integer number (171349920).

Almost surely, 2^2152343123 is an apocalyptic number.

2152343123 is a deficient number, since it is larger than the sum of its proper divisors (589255597).

2152343123 is a wasteful number, since it uses less digits than its factorization.

2152343123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951986.

The product of its digits is 4320, while the sum is 26.

The square root of 2152343123 is about 46393.3521423059. The cubic root of 2152343123 is about 1291.1315758580.

Adding to 2152343123 its reverse (3213432512), we get a palindrome (5365775635).

It can be divided in two parts, 21523 and 43123, that added together give a palindrome (64646).

The spelling of 2152343123 in words is "two billion, one hundred fifty-two million, three hundred forty-three thousand, one hundred twenty-three".