1331012320213 has 4 divisors (see below), whose sum is σ = 1331042814208. Its totient is φ = 1330981826220.

The previous prime is 1331012320151. The next prime is 1331012320223. The reversal of 1331012320213 is 3120232101331.

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 1331012320213 - 2¹⁷ = 1331012189141 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 (1331012320223) 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, 15181431 + ... + 15268852.

It is an arithmetic number, because the mean of its divisors is an integer number (332760703552).

Almost surely, 2^{1331012320213} is an apocalyptic number.

It is an amenable number.

1331012320213 is a deficient number, since it is larger than the sum of its proper divisors (30493995).

1331012320213 is an equidigital number, since it uses as much as digits as its factorization.

1331012320213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30493994.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1331012320213 its reverse (3120232101331), we get a palindrome (4451244421544).

It can be divided in two parts, 1331012 and 320213, that added together give a square (1651225 = 1285²).

The spelling of 1331012320213 in words is "one trillion, three hundred thirty-one billion, twelve million, three hundred twenty thousand, two hundred thirteen".