1031323019999 has 2 divisors, whose sum is σ = 1031323020000. Its totient is φ = 1031323019998.

The previous prime is 1031323019971. The next prime is 1031323020001. The reversal of 1031323019999 is 9999103231301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031323019999 - 2¹⁶ = 1031322954463 is a prime.

Together with 1031323020001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031323019939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515661509999 + 515661510000.

It is an arithmetic number, because the mean of its divisors is an integer number (515661510000).

Almost surely, 2^{1031323019999} is an apocalyptic number.

1031323019999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031323019999 is an equidigital number, since it uses as much as digits as its factorization.

1031323019999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 354294, while the sum is 50.

The spelling of 1031323019999 in words is "one trillion, thirty-one billion, three hundred twenty-three million, nineteen thousand, nine hundred ninety-nine".