61303919 has 2 divisors, whose sum is σ = 61303920. Its totient is φ = 61303918.

The previous prime is 61303873. The next prime is 61303927. The reversal of 61303919 is 91930316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61303919 - 2¹⁶ = 61238383 is a prime.

It is a super-2 number, since 2×61303919² = 7516340969517122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61303019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30651959 + 30651960.

It is an arithmetic number, because the mean of its divisors is an integer number (30651960).

Almost surely, 2^61303919 is an apocalyptic number.

61303919 is a deficient number, since it is larger than the sum of its proper divisors (1).

61303919 is an equidigital number, since it uses as much as digits as its factorization.

61303919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 61303919 is about 7829.6819220196. The cubic root of 61303919 is about 394.3023931055.

The spelling of 61303919 in words is "sixty-one million, three hundred three thousand, nine hundred nineteen".