1002431012321 has 2 divisors, whose sum is σ = 1002431012322. Its totient is φ = 1002431012320.

The previous prime is 1002431012281. The next prime is 1002431012353. The reversal of 1002431012321 is 1232101342001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1000222012321 + 2209000000 = 1000111^2 + 47000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002431012321 - 2¹⁸ = 1002430750177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002431012293 and 1002431012302.

It is not a weakly prime, because it can be changed into another prime (1002431012381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501215506160 + 501215506161.

It is an arithmetic number, because the mean of its divisors is an integer number (501215506161).

Almost surely, 2^{1002431012321} is an apocalyptic number.

It is an amenable number.

1002431012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002431012321 is an equidigital number, since it uses as much as digits as its factorization.

1002431012321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1002431012321 its reverse (1232101342001), we get a palindrome (2234532354322).

The spelling of 1002431012321 in words is "one trillion, two billion, four hundred thirty-one million, twelve thousand, three hundred twenty-one".