31013222111009 has 2 divisors, whose sum is σ = 31013222111010. Its totient is φ = 31013222111008.

The previous prime is 31013222110991. The next prime is 31013222111021. The reversal of 31013222111009 is 90011122231013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30322951930384 + 690270180625 = 5506628^2 + 830825^2 .

It is an emirp because it is prime and its reverse (90011122231013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31013222111009 - 2²⁴ = 31013205333793 is a prime.

It is not a weakly prime, because it can be changed into another prime (31013222113009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506611055504 + 15506611055505.

It is an arithmetic number, because the mean of its divisors is an integer number (15506611055505).

Almost surely, 2^{31013222111009} is an apocalyptic number.

It is an amenable number.

31013222111009 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013222111009 is an equidigital number, since it uses as much as digits as its factorization.

31013222111009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 31013222111009 in words is "thirty-one trillion, thirteen billion, two hundred twenty-two million, one hundred eleven thousand, nine".