1031112209 has 2 divisors, whose sum is σ = 1031112210. Its totient is φ = 1031112208.

The previous prime is 1031112193. The next prime is 1031112211. The reversal of 1031112209 is 9022111301.

1031112209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 959760400 + 71351809 = 30980^2 + 8447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031112209 - 2⁴ = 1031112193 is a prime.

Together with 1031112211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1031112109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515556104 + 515556105.

It is an arithmetic number, because the mean of its divisors is an integer number (515556105).

Almost surely, 2^1031112209 is an apocalyptic number.

It is an amenable number.

1031112209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031112209 is an equidigital number, since it uses as much as digits as its factorization.

1031112209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1031112209 is about 32110.9359720330. The cubic root of 1031112209 is about 1010.2650054540.

The spelling of 1031112209 in words is "one billion, thirty-one million, one hundred twelve thousand, two hundred nine".