1230000321 has 32 divisors (see below), whose sum is σ = 1901998080. Its totient is φ = 699192000.

The previous prime is 1230000319. The next prime is 1230000347.

It is a happy number.

1230000321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1230000321 - 2¹ = 1230000319 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1230000297 and 1230000306.

It is not an unprimeable number, because it can be changed into a prime (1230000391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53616 + ... + 73038.

It is an arithmetic number, because the mean of its divisors is an integer number (59437440).

Almost surely, 2^1230000321 is an apocalyptic number.

1230000321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1230000321 is a deficient number, since it is larger than the sum of its proper divisors (671997759).

1230000321 is a wasteful number, since it uses less digits than its factorization.

1230000321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19557.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1230000321 is about 35071.3604098843. The cubic root of 1230000321 is about 1071.4413628974.

It can be divided in two parts, 1230000 and 321, that added together give a palindrome (1230321).

The spelling of 1230000321 in words is "one billion, two hundred thirty million, three hundred twenty-one", and thus it is an aban number.