331213311109 has 2 divisors, whose sum is σ = 331213311110. Its totient is φ = 331213311108.

The previous prime is 331213311073. The next prime is 331213311139. The reversal of 331213311109 is 901113312133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305748173025 + 25465138084 = 552945^2 + 159578^2 .

It is an emirp because it is prime and its reverse (901113312133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331213311109 - 2¹¹ = 331213309061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331213311139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165606655554 + 165606655555.

It is an arithmetic number, because the mean of its divisors is an integer number (165606655555).

Almost surely, 2^331213311109 is an apocalyptic number.

It is an amenable number.

331213311109 is a deficient number, since it is larger than the sum of its proper divisors (1).

331213311109 is an equidigital number, since it uses as much as digits as its factorization.

331213311109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 28.

The spelling of 331213311109 in words is "three hundred thirty-one billion, two hundred thirteen million, three hundred eleven thousand, one hundred nine".