Search a number
-
+
31430124342 = 23253137240479
BaseRepresentation
bin11101010001011000…
…011010001100110110
310000010102022202011100
4131101120122030312
51003332102434332
622234440350530
72161603435401
oct352130321466
9100112282140
1031430124342
1112369538681
126111a75446
132c6b760316
14174235cd38
15c3e46e67c
hex75161a336

31430124342 has 48 divisors (see below), whose sum is σ = 69890221440. Its totient is φ = 10203962496.

The previous prime is 31430124317. The next prime is 31430124347. The reversal of 31430124342 is 24342103413.

31430124342 is a `hidden beast` number, since 3 + 14 + 301 + 2 + 4 + 342 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430124347) 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 23 ways as a sum of consecutive naturals, for example, 10459 + ... + 250937.

It is an arithmetic number, because the mean of its divisors is an integer number (1456046280).

Almost surely, 231430124342 is an apocalyptic number.

31430124342 is an abundant number, since it is smaller than the sum of its proper divisors (38460097098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31430124342 is a wasteful number, since it uses less digits than its factorization.

31430124342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240677 (or 240674 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 31430124342 its reverse (24342103413), we get a palindrome (55772227755).

The spelling of 31430124342 in words is "thirty-one billion, four hundred thirty million, one hundred twenty-four thousand, three hundred forty-two".

Divisors: 1 2 3 6 9 18 53 106 137 159 274 318 411 477 822 954 1233 2466 7261 14522 21783 43566 65349 130698 240479 480958 721437 1442874 2164311 4328622 12745387 25490774 32945623 38236161 65891246 76472322 98836869 114708483 197673738 229416966 296510607 593021214 1746118019 3492236038 5238354057 10476708114 15715062171 31430124342