1310002321 has 2 divisors, whose sum is σ = 1310002322. Its totient is φ = 1310002320.

The previous prime is 1310002319. The next prime is 1310002339. The reversal of 1310002321 is 1232000131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1303571025 + 6431296 = 36105^2 + 2536^2 .

It is an emirp because it is prime and its reverse (1232000131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1310002321 - 2¹ = 1310002319 is a prime.

It is a super-2 number, since 2×1310002321² = 3432212162050774082, which contains 22 as substring.

Together with 1310002319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1310002021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655001160 + 655001161.

It is an arithmetic number, because the mean of its divisors is an integer number (655001161).

Almost surely, 2^1310002321 is an apocalyptic number.

It is an amenable number.

1310002321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310002321 is an equidigital number, since it uses as much as digits as its factorization.

1310002321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1310002321 is about 36193.9542050879. The cubic root of 1310002321 is about 1094.1848275722.

Adding to 1310002321 its reverse (1232000131), we get a palindrome (2542002452).

The spelling of 1310002321 in words is "one billion, three hundred ten million, two thousand, three hundred twenty-one".