1031020012709 has 2 divisors, whose sum is σ = 1031020012710. Its totient is φ = 1031020012708.

The previous prime is 1031020012669. The next prime is 1031020012831. The reversal of 1031020012709 is 9072100201301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537724490209 + 493295522500 = 733297^2 + 702350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031020012709 - 2⁸ = 1031020012453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031020015709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515510006354 + 515510006355.

It is an arithmetic number, because the mean of its divisors is an integer number (515510006355).

Almost surely, 2^{1031020012709} is an apocalyptic number.

It is an amenable number.

1031020012709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031020012709 is an equidigital number, since it uses as much as digits as its factorization.

1031020012709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The spelling of 1031020012709 in words is "one trillion, thirty-one billion, twenty million, twelve thousand, seven hundred nine".