1003231211987 has 2 divisors, whose sum is σ = 1003231211988. Its totient is φ = 1003231211986.

The previous prime is 1003231211977. The next prime is 1003231212013. The reversal of 1003231211987 is 7891121323001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1003231211987 - 2¹⁰ = 1003231210963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1003231211987.

It is not a weakly prime, because it can be changed into another prime (1003231211947) 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, 501615605993 + 501615605994.

It is an arithmetic number, because the mean of its divisors is an integer number (501615605994).

Almost surely, 2^{1003231211987} is an apocalyptic number.

1003231211987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003231211987 is an equidigital number, since it uses as much as digits as its factorization.

1003231211987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

Adding to 1003231211987 its reverse (7891121323001), we get a palindrome (8894352534988).

The spelling of 1003231211987 in words is "one trillion, three billion, two hundred thirty-one million, two hundred eleven thousand, nine hundred eighty-seven".