Search a number
-
+
30031212013 = 1125110876933
BaseRepresentation
bin11011111101111111…
…111110110111101101
32212111221000122012121
4123331333332313231
5443000442241023
621443545032541
72112126042655
oct337577766755
985457018177
1030031212013
1111810922090
1259a1485751
132aa79a294a
14164c651365
15bab741d5d
hex6fdffeded

30031212013 has 8 divisors (see below), whose sum is σ = 32891848416. Its totient is φ = 27192330000.

The previous prime is 30031211989. The next prime is 30031212037. The reversal of 30031212013 is 31021213003.

It is an interprime number because it is at equal distance from previous prime (30031211989) and next prime (30031212037).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30031212013 - 25 = 30031211981 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 (30031212053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5435706 + ... + 5441227.

It is an arithmetic number, because the mean of its divisors is an integer number (4111481052).

Almost surely, 230031212013 is an apocalyptic number.

It is an amenable number.

30031212013 is a deficient number, since it is larger than the sum of its proper divisors (2860636403).

30031212013 is a wasteful number, since it uses less digits than its factorization.

30031212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10877195.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30031212013 its reverse (31021213003), we get a palindrome (61052425016).

The spelling of 30031212013 in words is "thirty billion, thirty-one million, two hundred twelve thousand, thirteen".

Divisors: 1 11 251 2761 10876933 119646263 2730110183 30031212013