1031020210009 has 2 divisors, whose sum is σ = 1031020210010. Its totient is φ = 1031020210008.

The previous prime is 1031020209959. The next prime is 1031020210079. The reversal of 1031020210009 is 9000120201301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1028682777600 + 2337432409 = 1014240^2 + 48347^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031020210009 - 2⁹ = 1031020209497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031020210079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515510105004 + 515510105005.

It is an arithmetic number, because the mean of its divisors is an integer number (515510105005).

Almost surely, 2^{1031020210009} is an apocalyptic number.

It is an amenable number.

1031020210009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031020210009 is an equidigital number, since it uses as much as digits as its factorization.

1031020210009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The spelling of 1031020210009 in words is "one trillion, thirty-one billion, twenty million, two hundred ten thousand, nine".