1230440321 has 8 divisors (see below), whose sum is σ = 1343875104. Its totient is φ = 1117268320.

The previous prime is 1230440317. The next prime is 1230440357.

1230440321 is nontrivially palindromic in base 10.

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 1230440321 - 2² = 1230440317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230440293 and 1230440302.

It is not an unprimeable number, because it can be changed into a prime (1230440311) 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, 55835 + ... + 74688.

It is an arithmetic number, because the mean of its divisors is an integer number (167984388).

Almost surely, 2^1230440321 is an apocalyptic number.

1230440321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1230440321 is a deficient number, since it is larger than the sum of its proper divisors (113434783).

1230440321 is a wasteful number, since it uses less digits than its factorization.

1230440321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131391.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1230440321 is about 35077.6327736066. The cubic root of 1230440321 is about 1071.5691075786.

It can be divided in two parts, 12304 and 40321, that added together give a palindrome (52625).

The spelling of 1230440321 in words is "one billion, two hundred thirty million, four hundred forty thousand, three hundred twenty-one".