61003331 has 2 divisors, whose sum is σ = 61003332. Its totient is φ = 61003330.

The previous prime is 61003289. The next prime is 61003351. The reversal of 61003331 is 13330016.

61003331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61003331 is a prime.

It is a super-2 number, since 2×61003331² = 7442812786191122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61003351) 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, 30501665 + 30501666.

It is an arithmetic number, because the mean of its divisors is an integer number (30501666).

Almost surely, 2^61003331 is an apocalyptic number.

61003331 is a deficient number, since it is larger than the sum of its proper divisors (1).

61003331 is an equidigital number, since it uses as much as digits as its factorization.

61003331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 61003331 is about 7810.4629184191. The cubic root of 61003331 is about 393.6568834651.

Adding to 61003331 its reverse (13330016), we get a palindrome (74333347).

The spelling of 61003331 in words is "sixty-one million, three thousand, three hundred thirty-one".