1312331003213 has 8 divisors (see below), whose sum is σ = 1324258097400. Its totient is φ = 1300409410048.

The previous prime is 1312331003173. The next prime is 1312331003227. The reversal of 1312331003213 is 3123001332131.

It can be written as a sum of positive squares in 4 ways, for example, as 406021291204 + 906309712009 = 637198^2 + 952003^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312331003213 - 2¹⁸ = 1312330741069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312331033213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895208 + ... + 1850961.

It is an arithmetic number, because the mean of its divisors is an integer number (165532262175).

Almost surely, 2^{1312331003213} is an apocalyptic number.

It is an amenable number.

1312331003213 is a deficient number, since it is larger than the sum of its proper divisors (11927094187).

1312331003213 is a wasteful number, since it uses less digits than its factorization.

1312331003213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750511.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1312331003213 its reverse (3123001332131), we get a palindrome (4435332335344).

The spelling of 1312331003213 in words is "one trillion, three hundred twelve billion, three hundred thirty-one million, three thousand, two hundred thirteen".