Search a number
-
+
231013131342 = 23717323547803
BaseRepresentation
bin1101011100100101110…
…1001010010001001110
3211002021200221222210120
43113021131022101032
512241103330200332
6254043113045410
722455502134360
oct3271135122116
9732250858716
10231013131342
1189a76987864
12389319b6866
1318a2756b376
14b276cd4d30
156020ec532c
hex35c974a44e

231013131342 has 32 divisors (see below), whose sum is σ = 559090605312. Its totient is φ = 62121177984.

The previous prime is 231013131313. The next prime is 231013131361. The reversal of 231013131342 is 243131310132.

231013131342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2310131313422 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161773188 + ... + 161774615.

It is an arithmetic number, because the mean of its divisors is an integer number (17471581416).

Almost surely, 2231013131342 is an apocalyptic number.

231013131342 is an abundant number, since it is smaller than the sum of its proper divisors (328077473970).

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

231013131342 is a wasteful number, since it uses less digits than its factorization.

231013131342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323547832.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 231013131342 its reverse (243131310132), we get a palindrome (474144441474).

The spelling of 231013131342 in words is "two hundred thirty-one billion, thirteen million, one hundred thirty-one thousand, three hundred forty-two".

Divisors: 1 2 3 6 7 14 17 21 34 42 51 102 119 238 357 714 323547803 647095606 970643409 1941286818 2264834621 4529669242 5500312651 6794503863 11000625302 13589007726 16500937953 33001875906 38502188557 77004377114 115506565671 231013131342