10304351561 has 6 divisors (see below), whose sum is σ = 11986694730. Its totient is φ = 8832301296.

The previous prime is 10304351549. The next prime is 10304351599. The reversal of 10304351561 is 16515340301.

It can be written as a sum of positive squares in only one way, i.e., 7944335161 + 2360016400 = 89131^2 + 48580^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10304351561 is a prime.

It is a super-2 number, since 2×10304351561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10304351501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105146396 + ... + 105146493.

It is an arithmetic number, because the mean of its divisors is an integer number (1997782455).

Almost surely, 2^10304351561 is an apocalyptic number.

It is an amenable number.

10304351561 is a deficient number, since it is larger than the sum of its proper divisors (1682343169).

10304351561 is an equidigital number, since it uses as much as digits as its factorization.

10304351561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210292903 (or 210292896 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 10304351561 its reverse (16515340301), we get a palindrome (26819691862).

The spelling of 10304351561 in words is "ten billion, three hundred four million, three hundred fifty-one thousand, five hundred sixty-one".