2031331009 has 2 divisors, whose sum is σ = 2031331010. Its totient is φ = 2031331008.

The previous prime is 2031330979. The next prime is 2031331039. The reversal of 2031331009 is 9001331302.

It is a balanced prime because it is at equal distance from previous prime (2031330979) and next prime (2031331039).

It can be written as a sum of positive squares in only one way, i.e., 1849000000 + 182331009 = 43000^2 + 13503^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031331009 - 2¹¹ = 2031328961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2031331039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015665504 + 1015665505.

It is an arithmetic number, because the mean of its divisors is an integer number (1015665505).

Almost surely, 2^2031331009 is an apocalyptic number.

It is an amenable number.

2031331009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031331009 is an equidigital number, since it uses as much as digits as its factorization.

2031331009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 2031331009 is about 45070.2896485035. The cubic root of 2031331009 is about 1266.4660904550.

The spelling of 2031331009 in words is "two billion, thirty-one million, three hundred thirty-one thousand, nine".