231330303013 has 2 divisors, whose sum is σ = 231330303014. Its totient is φ = 231330303012.

The previous prime is 231330303007. The next prime is 231330303031. The reversal of 231330303013 is 310303033132.

231330303013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (231330303031) 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., 153725158084 + 77605144929 = 392078^2 + 278577^2 .

It is a cyclic number.

It is not a de Polignac number, because 231330303013 - 2¹³ = 231330294821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231330303613) 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, 115665151506 + 115665151507.

It is an arithmetic number, because the mean of its divisors is an integer number (115665151507).

Almost surely, 2^231330303013 is an apocalyptic number.

It is an amenable number.

231330303013 is a deficient number, since it is larger than the sum of its proper divisors (1).

231330303013 is an equidigital number, since it uses as much as digits as its factorization.

231330303013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 22.

Adding to 231330303013 its reverse (310303033132), we get a palindrome (541633336145).

The spelling of 231330303013 in words is "two hundred thirty-one billion, three hundred thirty million, three hundred three thousand, thirteen".