1331230013 has 2 divisors, whose sum is σ = 1331230014. Its totient is φ = 1331230012.

The previous prime is 1331230009. The next prime is 1331230031. The reversal of 1331230013 is 3100321331.

Together with next prime (1331230031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1314932644 + 16297369 = 36262^2 + 4037^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331230013 - 2² = 1331230009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331229973 and 1331230000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331230063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665615006 + 665615007.

It is an arithmetic number, because the mean of its divisors is an integer number (665615007).

Almost surely, 2^1331230013 is an apocalyptic number.

It is an amenable number.

1331230013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331230013 is an equidigital number, since it uses as much as digits as its factorization.

1331230013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1331230013 is about 36486.0248999531. The cubic root of 1331230013 is about 1100.0633608131.

Adding to 1331230013 its reverse (3100321331), we get a palindrome (4431551344).

The spelling of 1331230013 in words is "one billion, three hundred thirty-one million, two hundred thirty thousand, thirteen".