10545313321 has 2 divisors, whose sum is σ = 10545313322. Its totient is φ = 10545313320.

The previous prime is 10545313319. The next prime is 10545313327. The reversal of 10545313321 is 12331354501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8649930025 + 1895383296 = 93005^2 + 43536^2 .

It is a cyclic number.

It is not a de Polignac number, because 10545313321 - 2¹ = 10545313319 is a prime.

It is a super-2 number, since 2×10545313321² (a number of 21 digits) contains 22 as substring.

Together with 10545313319, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10545313321.

It is not a weakly prime, because it can be changed into another prime (10545313327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5272656660 + 5272656661.

It is an arithmetic number, because the mean of its divisors is an integer number (5272656661).

Almost surely, 2^10545313321 is an apocalyptic number.

It is an amenable number.

10545313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10545313321 is an equidigital number, since it uses as much as digits as its factorization.

10545313321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 10545313321 its reverse (12331354501), we get a palindrome (22876667822).

The spelling of 10545313321 in words is "ten billion, five hundred forty-five million, three hundred thirteen thousand, three hundred twenty-one".