61030811 has 2 divisors, whose sum is σ = 61030812. Its totient is φ = 61030810.

The previous prime is 61030789. The next prime is 61030841. The reversal of 61030811 is 11803016.

61030811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61030811 - 2⁶ = 61030747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61030841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30515405 + 30515406.

It is an arithmetic number, because the mean of its divisors is an integer number (30515406).

Almost surely, 2^61030811 is an apocalyptic number.

61030811 is a deficient number, since it is larger than the sum of its proper divisors (1).

61030811 is an equidigital number, since it uses as much as digits as its factorization.

61030811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 61030811 is about 7812.2218990502. The cubic root of 61030811 is about 393.7159844303.

Adding to 61030811 its reverse (11803016), we get a palindrome (72833827).

The spelling of 61030811 in words is "sixty-one million, thirty thousand, eight hundred eleven".