30705019 has 2 divisors, whose sum is σ = 30705020. Its totient is φ = 30705018.

The previous prime is 30705013. The next prime is 30705049. The reversal of 30705019 is 91050703.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30705019 - 2¹⁷ = 30573947 is a prime.

It is a super-2 number, since 2×30705019² = 1885596383580722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30704984 and 30705002.

It is not a weakly prime, because it can be changed into another prime (30705013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15352509 + 15352510.

It is an arithmetic number, because the mean of its divisors is an integer number (15352510).

Almost surely, 2^30705019 is an apocalyptic number.

30705019 is a deficient number, since it is larger than the sum of its proper divisors (1).

30705019 is an equidigital number, since it uses as much as digits as its factorization.

30705019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 30705019 is about 5541.2109687324. The cubic root of 30705019 is about 313.1384927446.

The spelling of 30705019 in words is "thirty million, seven hundred five thousand, nineteen".