Search a number
-
+
30351283223 = 70143297123
BaseRepresentation
bin11100010001000100…
…111101010000010111
32220100020021221100212
4130101010331100113
5444124412030343
621535421200035
72123063436122
oct342104752027
986306257325
1030351283223
1111965565348
125a7070001b
132b290aa3b1
14167cd6b3b9
15bc98b7c18
hex71113d417

30351283223 has 4 divisors (see below), whose sum is σ = 30394581048. Its totient is φ = 30307985400.

The previous prime is 30351283199. The next prime is 30351283247. The reversal of 30351283223 is 32238215303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32238215303 = 74605459329.

It is an interprime number because it is at equal distance from previous prime (30351283199) and next prime (30351283247).

It is a cyclic number.

It is not a de Polignac number, because 30351283223 - 214 = 30351266839 is a prime.

It is a super-2 number, since 2×303512832232 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30351283223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30351283723) 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, 21647861 + ... + 21649262.

It is an arithmetic number, because the mean of its divisors is an integer number (7598645262).

Almost surely, 230351283223 is an apocalyptic number.

30351283223 is a deficient number, since it is larger than the sum of its proper divisors (43297825).

30351283223 is an equidigital number, since it uses as much as digits as its factorization.

30351283223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43297824.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 30351283223 its reverse (32238215303), we get a palindrome (62589498526).

The spelling of 30351283223 in words is "thirty billion, three hundred fifty-one million, two hundred eighty-three thousand, two hundred twenty-three".

Divisors: 1 701 43297123 30351283223