Search a number
-
+
30713081943 = 31719107296221
BaseRepresentation
bin11100100110101001…
…000111000001010111
32221021110002012220110
4130212221013001113
51000400022110233
622035343534103
72135045613645
oct344651070127
987243065813
1030713081943
1112030809055
125b518ba333
132b86034a8b
1416b502a195
15beb532663
hex726a47057

30713081943 has 32 divisors (see below), whose sum is σ = 46068445440. Its totient is φ = 18086008320.

The previous prime is 30713081933. The next prime is 30713081969. The reversal of 30713081943 is 34918031703.

It is a happy number.

It is not a de Polignac number, because 30713081943 - 213 = 30713073751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30713081933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44428 + ... + 251793.

It is an arithmetic number, because the mean of its divisors is an integer number (1439638920).

Almost surely, 230713081943 is an apocalyptic number.

30713081943 is a deficient number, since it is larger than the sum of its proper divisors (15355363497).

30713081943 is a wasteful number, since it uses less digits than its factorization.

30713081943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296367.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 30713081943 in words is "thirty billion, seven hundred thirteen million, eighty-one thousand, nine hundred forty-three".

Divisors: 1 3 17 19 51 57 107 321 323 969 1819 2033 5457 6099 34561 103683 296221 888663 5035757 5628199 15107271 16884597 31695647 95086941 95679383 287038149 538825999 602217293 1616477997 1806651879 10237693981 30713081943