1230144391 has 8 divisors (see below), whose sum is σ = 1406474784. Its totient is φ = 1053962880.

The previous prime is 1230144373. The next prime is 1230144401. The reversal of 1230144391 is 1934410321.

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-1230144391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230144371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18910 + ... + 53083.

It is an arithmetic number, because the mean of its divisors is an integer number (175809348).

Almost surely, 2^1230144391 is an apocalyptic number.

1230144391 is a deficient number, since it is larger than the sum of its proper divisors (176330393).

1230144391 is an equidigital number, since it uses as much as digits as its factorization.

1230144391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74441.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1230144391 is about 35073.4143048549. The cubic root of 1230144391 is about 1071.4831939247.

The spelling of 1230144391 in words is "one billion, two hundred thirty million, one hundred forty-four thousand, three hundred ninety-one".