Search a number
30703817 is a prime number
BaseRepresentation
bin111010100100…
…0000011001001
32010202220201102
41311020003021
530330010232
63014031145
7521656334
oct165100311
963686642
1030703817
1116371261
12a3484b5
136490451
14411361b
152a67662
hex1d480c9

30703817 has 2 divisors, whose sum is σ = 30703818. Its totient is φ = 30703816.

The previous prime is 30703811. The next prime is 30703847. The reversal of 30703817 is 71830703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21799561 + 8904256 = 4669^2 + 2984^2 .

It is a cyclic number.

It is not a de Polignac number, because 30703817 - 216 = 30638281 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30703817.

It is not a weakly prime, because it can be changed into another prime (30703811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15351908 + 15351909.

It is an arithmetic number, because the mean of its divisors is an integer number (15351909).

Almost surely, 230703817 is an apocalyptic number.

It is an amenable number.

30703817 is a deficient number, since it is larger than the sum of its proper divisors (1).

30703817 is an equidigital number, since it uses as much as digits as its factorization.

30703817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 30703817 is about 5541.1025076243. The cubic root of 30703817 is about 313.1344065790.

The spelling of 30703817 in words is "thirty million, seven hundred three thousand, eight hundred seventeen".