1312231323113 has 4 divisors (see below), whose sum is σ = 1320921596928. Its totient is φ = 1303541049300.

The previous prime is 1312231323097. The next prime is 1312231323121. The reversal of 1312231323113 is 3113231322131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312231323113 - 2⁴ = 1312231323097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312231323163) 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, 4345136681 + ... + 4345136982.

It is an arithmetic number, because the mean of its divisors is an integer number (330230399232).

Almost surely, 2^{1312231323113} is an apocalyptic number.

It is an amenable number.

1312231323113 is a deficient number, since it is larger than the sum of its proper divisors (8690273815).

1312231323113 is an equidigital number, since it uses as much as digits as its factorization.

1312231323113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8690273814.

The product of its digits is 1944, while the sum is 26.

Adding to 1312231323113 its reverse (3113231322131), we get a palindrome (4425462645244).

The spelling of 1312231323113 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, three hundred twenty-three thousand, one hundred thirteen".