1002331020281 has 2 divisors, whose sum is σ = 1002331020282. Its totient is φ = 1002331020280.

The previous prime is 1002331020211. The next prime is 1002331020323. The reversal of 1002331020281 is 1820201332001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 528105970681 + 474225049600 = 726709^2 + 688640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002331020281 - 2³⁰ = 1001257278457 is a prime.

It is a super-2 number, since 2×1002331020281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1002331020211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501165510140 + 501165510141.

It is an arithmetic number, because the mean of its divisors is an integer number (501165510141).

Almost surely, 2^{1002331020281} is an apocalyptic number.

It is an amenable number.

1002331020281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002331020281 is an equidigital number, since it uses as much as digits as its factorization.

1002331020281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1002331020281 its reverse (1820201332001), we get a palindrome (2822532352282).

The spelling of 1002331020281 in words is "one trillion, two billion, three hundred thirty-one million, twenty thousand, two hundred eighty-one".