1223312430 has 32 divisors (see below), whose sum is σ = 2938871808. Its totient is φ = 325892000.

The previous prime is 1223312413. The next prime is 1223312437. The reversal of 1223312430 is 342133221.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1223312397 and 1223312406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223312437) 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 15 ways as a sum of consecutive naturals, for example, 11155 + ... + 50705.

It is an arithmetic number, because the mean of its divisors is an integer number (91839744).

Almost surely, 2^1223312430 is an apocalyptic number.

1223312430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223312430 is an abundant number, since it is smaller than the sum of its proper divisors (1715559378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223312430 is a wasteful number, since it uses less digits than its factorization.

1223312430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40592.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1223312430 is about 34975.8835485253. The cubic root of 1223312430 is about 1069.4959136044.

Adding to 1223312430 its reverse (342133221), we get a palindrome (1565445651).

The spelling of 1223312430 in words is "one billion, two hundred twenty-three million, three hundred twelve thousand, four hundred thirty".