1223312302 has 16 divisors (see below), whose sum is σ = 1941264000. Its totient is φ = 576548280.

The previous prime is 1223312257. The next prime is 1223312329. The reversal of 1223312302 is 2032133221.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1223312302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73324 + ... + 88447.

It is an arithmetic number, because the mean of its divisors is an integer number (121329000).

Almost surely, 2^1223312302 is an apocalyptic number.

1223312302 is a deficient number, since it is larger than the sum of its proper divisors (717951698).

1223312302 is a wasteful number, since it uses less digits than its factorization.

1223312302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161991.

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

The square root of 1223312302 is about 34975.8817186930. The cubic root of 1223312302 is about 1069.4958763026.

Adding to 1223312302 its reverse (2032133221), we get a palindrome (3255445523).

The spelling of 1223312302 in words is "one billion, two hundred twenty-three million, three hundred twelve thousand, three hundred two".