Search a number
-
+
30013102313 = 52181575173
BaseRepresentation
bin11011111100111010…
…111001100011101001
32212110122221120100222
4123330322321203221
5442431323233223
621442100535425
72111516106005
oct337472714351
985418846328
1030013102313
1111801682a97
1259973b1575
132aa4001a4c
14164a099705
15ba9d660c8
hex6fceb98e9

30013102313 has 4 divisors (see below), whose sum is σ = 30013729668. Its totient is φ = 30012474960.

The previous prime is 30013102309. The next prime is 30013102337. The reversal of 30013102313 is 31320131003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8356153744 + 21656948569 = 91412^2 + 147163^2 .

It is a cyclic number.

It is not a de Polignac number, because 30013102313 - 22 = 30013102309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30013102291 and 30013102300.

It is not an unprimeable number, because it can be changed into a prime (30013102303) 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, 235406 + ... + 339767.

It is an arithmetic number, because the mean of its divisors is an integer number (7503432417).

Almost surely, 230013102313 is an apocalyptic number.

It is an amenable number.

30013102313 is a deficient number, since it is larger than the sum of its proper divisors (627355).

30013102313 is an equidigital number, since it uses as much as digits as its factorization.

30013102313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627354.

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

Adding to 30013102313 its reverse (31320131003), we get a palindrome (61333233316).

The spelling of 30013102313 in words is "thirty billion, thirteen million, one hundred two thousand, three hundred thirteen".

Divisors: 1 52181 575173 30013102313