Search a number
-
+
30661703 = 56953887
BaseRepresentation
bin111010011110…
…1110001000111
32010200202221122
41310331301013
530322133303
63013104155
7521422502
oct164756107
963622848
1030661703
1116342656
12a32805b
136477227
144102139
152a59e38
hex1d3dc47

30661703 has 4 divisors (see below), whose sum is σ = 30716160. Its totient is φ = 30607248.

The previous prime is 30661669. The next prime is 30661733. The reversal of 30661703 is 30716603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30716603 = 171806859.

It is a cyclic number.

It is not a de Polignac number, because 30661703 - 26 = 30661639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30661733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26375 + ... + 27512.

It is an arithmetic number, because the mean of its divisors is an integer number (7679040).

Almost surely, 230661703 is an apocalyptic number.

30661703 is a deficient number, since it is larger than the sum of its proper divisors (54457).

30661703 is an equidigital number, since it uses as much as digits as its factorization.

30661703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54456.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 30661703 is about 5537.3010573744. The cubic root of 30661703 is about 312.9911738300.

The spelling of 30661703 in words is "thirty million, six hundred sixty-one thousand, seven hundred three".

Divisors: 1 569 53887 30661703