30813447061 has 2 divisors, whose sum is σ = 30813447062. Its totient is φ = 30813447060.

The previous prime is 30813446999. The next prime is 30813447113. The reversal of 30813447061 is 16074431803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30062358225 + 751088836 = 173385^2 + 27406^2 .

It is a cyclic number.

It is not a de Polignac number, because 30813447061 - 2¹⁷ = 30813315989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30813447061.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15406723530 + 15406723531.

It is an arithmetic number, because the mean of its divisors is an integer number (15406723531).

Almost surely, 2^30813447061 is an apocalyptic number.

It is an amenable number.

30813447061 is a deficient number, since it is larger than the sum of its proper divisors (1).

30813447061 is an equidigital number, since it uses as much as digits as its factorization.

30813447061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

Adding to 30813447061 its reverse (16074431803), we get a palindrome (46887878864).

The spelling of 30813447061 in words is "thirty billion, eight hundred thirteen million, four hundred forty-seven thousand, sixty-one".