1232220313 has 6 divisors (see below), whose sum is σ = 1252755582. Its totient is φ = 1212016320.

The previous prime is 1232220289. The next prime is 1232220323. The reversal of 1232220313 is 3130222321.

It can be written as a sum of positive squares in 3 ways, for example, as 6310144 + 1225910169 = 2512^2 + 35013^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1232220313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232220323) 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 5 ways as a sum of consecutive naturals, for example, 161856 + ... + 169297.

It is an arithmetic number, because the mean of its divisors is an integer number (208792597).

Almost surely, 2^1232220313 is an apocalyptic number.

It is an amenable number.

1232220313 is a deficient number, since it is larger than the sum of its proper divisors (20535269).

1232220313 is an frugal number, since it uses more digits than its factorization.

1232220313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331275 (or 331214 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1232220313 is about 35102.9957838359. The cubic root of 1232220313 is about 1072.0855799842.

Adding to 1232220313 its reverse (3130222321), we get a palindrome (4362442634).

The spelling of 1232220313 in words is "one billion, two hundred thirty-two million, two hundred twenty thousand, three hundred thirteen".