2145134323 has 4 divisors (see below), whose sum is σ = 2148450480. Its totient is φ = 2141818168.

The previous prime is 2145134297. The next prime is 2145134347. The reversal of 2145134323 is 3234315412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2145134323 - 2¹³ = 2145126131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145134291 and 2145134300.

It is not an unprimeable number, because it can be changed into a prime (2145134363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1657108 + ... + 1658401.

It is an arithmetic number, because the mean of its divisors is an integer number (537112620).

Almost surely, 2^2145134323 is an apocalyptic number.

2145134323 is a deficient number, since it is larger than the sum of its proper divisors (3316157).

2145134323 is an equidigital number, since it uses as much as digits as its factorization.

2145134323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316156.

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

The square root of 2145134323 is about 46315.5948142739. The cubic root of 2145134323 is about 1289.6885098129.

Adding to 2145134323 its reverse (3234315412), we get a palindrome (5379449735).

The spelling of 2145134323 in words is "two billion, one hundred forty-five million, one hundred thirty-four thousand, three hundred twenty-three".