1031044320389 has 2 divisors, whose sum is σ = 1031044320390. Its totient is φ = 1031044320388.

The previous prime is 1031044320359. The next prime is 1031044320407. The reversal of 1031044320389 is 9830234401301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1030488916900 + 555403489 = 1015130^2 + 23567^2 .

It is an emirp because it is prime and its reverse (9830234401301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1031044320389 - 2¹² = 1031044316293 is a prime.

It is a super-2 number, since 2×1031044320389² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031044320359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515522160194 + 515522160195.

It is an arithmetic number, because the mean of its divisors is an integer number (515522160195).

Almost surely, 2^{1031044320389} is an apocalyptic number.

It is an amenable number.

1031044320389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031044320389 is an equidigital number, since it uses as much as digits as its factorization.

1031044320389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 1031044320389 in words is "one trillion, thirty-one billion, forty-four million, three hundred twenty thousand, three hundred eighty-nine".