1230134443 has 4 divisors (see below), whose sum is σ = 1230837928. Its totient is φ = 1229430960.

The previous prime is 1230134417. The next prime is 1230134447. The reversal of 1230134443 is 3444310321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230134443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230134447) 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, 349113 + ... + 352618.

It is an arithmetic number, because the mean of its divisors is an integer number (307709482).

Almost surely, 2^1230134443 is an apocalyptic number.

1230134443 is a deficient number, since it is larger than the sum of its proper divisors (703485).

1230134443 is an equidigital number, since it uses as much as digits as its factorization.

1230134443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703484.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1230134443 is about 35073.2724877506. The cubic root of 1230134443 is about 1071.4803056069.

Adding to 1230134443 its reverse (3444310321), we get a palindrome (4674444764).

The spelling of 1230134443 in words is "one billion, two hundred thirty million, one hundred thirty-four thousand, four hundred forty-three".