1031330220997 has 2 divisors, whose sum is σ = 1031330220998. Its totient is φ = 1031330220996.

The previous prime is 1031330220989. The next prime is 1031330221057. The reversal of 1031330220997 is 7990220331301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 914804254116 + 116525966881 = 956454^2 + 341359^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031330220997 - 2³ = 1031330220989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031330220967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515665110498 + 515665110499.

It is an arithmetic number, because the mean of its divisors is an integer number (515665110499).

Almost surely, 2^{1031330220997} is an apocalyptic number.

It is an amenable number.

1031330220997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031330220997 is an equidigital number, since it uses as much as digits as its factorization.

1031330220997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 40.

The spelling of 1031330220997 in words is "one trillion, thirty-one billion, three hundred thirty million, two hundred twenty thousand, nine hundred ninety-seven".