1312322223 has 16 divisors (see below), whose sum is σ = 1771614720. Its totient is φ = 864011904.

The previous prime is 1312322171. The next prime is 1312322243. The reversal of 1312322223 is 3222232131.

It is a happy number.

It is not a de Polignac number, because 1312322223 - 2¹² = 1312318127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312322223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312322243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89098 + ... + 102776.

It is an arithmetic number, because the mean of its divisors is an integer number (110725920).

Almost surely, 2^1312322223 is an apocalyptic number.

1312322223 is a deficient number, since it is larger than the sum of its proper divisors (459292497).

1312322223 is a wasteful number, since it uses less digits than its factorization.

1312322223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14078.

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

The square root of 1312322223 is about 36225.9882266861. The cubic root of 1312322223 is about 1094.8303492304.

Adding to 1312322223 its reverse (3222232131), we get a palindrome (4534554354).

The spelling of 1312322223 in words is "one billion, three hundred twelve million, three hundred twenty-two thousand, two hundred twenty-three".