1003231203809 has 2 divisors, whose sum is σ = 1003231203810. Its totient is φ = 1003231203808.

The previous prime is 1003231203781. The next prime is 1003231203883. The reversal of 1003231203809 is 9083021323001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 690718899025 + 312512304784 = 831095^2 + 559028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1003231203809 is a prime.

It is a super-2 number, since 2×1003231203809² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1003231203409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501615601904 + 501615601905.

It is an arithmetic number, because the mean of its divisors is an integer number (501615601905).

Almost surely, 2^{1003231203809} is an apocalyptic number.

It is an amenable number.

1003231203809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003231203809 is an equidigital number, since it uses as much as digits as its factorization.

1003231203809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 1003231203809 in words is "one trillion, three billion, two hundred thirty-one million, two hundred three thousand, eight hundred nine".