31112323119809 has 2 divisors, whose sum is σ = 31112323119810. Its totient is φ = 31112323119808.

The previous prime is 31112323119799. The next prime is 31112323119827. The reversal of 31112323119809 is 90891132321113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16608298307584 + 14504024812225 = 4075328^2 + 3808415^2 .

It is an emirp because it is prime and its reverse (90891132321113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31112323119809 - 2⁴ = 31112323119793 is a prime.

It is a super-2 number, since 2×31112323119809² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31112323119809.

It is not a weakly prime, because it can be changed into another prime (31112323119869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556161559904 + 15556161559905.

It is an arithmetic number, because the mean of its divisors is an integer number (15556161559905).

Almost surely, 2^{31112323119809} is an apocalyptic number.

It is an amenable number.

31112323119809 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112323119809 is an equidigital number, since it uses as much as digits as its factorization.

31112323119809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 31112323119809 in words is "thirty-one trillion, one hundred twelve billion, three hundred twenty-three million, one hundred nineteen thousand, eight hundred nine".