1312230223 has 4 divisors (see below), whose sum is σ = 1312374960. Its totient is φ = 1312085488.

The previous prime is 1312230209. The next prime is 1312230239. The reversal of 1312230223 is 3220322131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3220322131 = 13 ⋅247717087.

It is a cyclic number.

It is not a de Polignac number, because 1312230223 - 2⁵ = 1312230191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312230223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312230263) 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 3 ways as a sum of consecutive naturals, for example, 57790 + ... + 77227.

It is an arithmetic number, because the mean of its divisors is an integer number (328093740).

Almost surely, 2^1312230223 is an apocalyptic number.

1312230223 is a deficient number, since it is larger than the sum of its proper divisors (144737).

1312230223 is an equidigital number, since it uses as much as digits as its factorization.

1312230223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144736.

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

The square root of 1312230223 is about 36224.7183978012. The cubic root of 1312230223 is about 1094.8047643692.

Adding to 1312230223 its reverse (3220322131), we get a palindrome (4532552354).

The spelling of 1312230223 in words is "one billion, three hundred twelve million, two hundred thirty thousand, two hundred twenty-three".