1312322223203 has 4 divisors (see below), whose sum is σ = 1312339328160. Its totient is φ = 1312305118248.

The previous prime is 1312322223197. The next prime is 1312322223211. The reversal of 1312322223203 is 3023222232131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312322223203 - 2¹² = 1312322219107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312322223503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8436875 + ... + 8591012.

It is an arithmetic number, because the mean of its divisors is an integer number (328084832040).

Almost surely, 2^{1312322223203} is an apocalyptic number.

1312322223203 is a deficient number, since it is larger than the sum of its proper divisors (17104957).

1312322223203 is an equidigital number, since it uses as much as digits as its factorization.

1312322223203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17104956.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 1312322223203 its reverse (3023222232131), we get a palindrome (4335544455334).

The spelling of 1312322223203 in words is "one trillion, three hundred twelve billion, three hundred twenty-two million, two hundred twenty-three thousand, two hundred three".