1231230443 has 8 divisors (see below), whose sum is σ = 1243238736. Its totient is φ = 1219276800.

The previous prime is 1231230437. The next prime is 1231230509. The reversal of 1231230443 is 3440321321.

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

It is a cyclic number.

It is not a de Polignac number, because 1231230443 - 2³⁰ = 157488619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231230433) 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, 32363 + ... + 59243.

It is an arithmetic number, because the mean of its divisors is an integer number (155404842).

Almost surely, 2^1231230443 is an apocalyptic number.

1231230443 is a deficient number, since it is larger than the sum of its proper divisors (12008293).

1231230443 is a wasteful number, since it uses less digits than its factorization.

1231230443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27325.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1231230443 is about 35088.8934422276. The cubic root of 1231230443 is about 1071.7984263431.

Adding to 1231230443 its reverse (3440321321), we get a palindrome (4671551764).

The spelling of 1231230443 in words is "one billion, two hundred thirty-one million, two hundred thirty thousand, four hundred forty-three".