Search a number
-
+
131210872386 = 23115507361003
BaseRepresentation
bin111101000110011000…
…1110000011001000010
3110112200022101221021020
41322030301300121002
54122204440404021
6140135532210310
712323346004356
oct1721461603102
9415608357236
10131210872386
1150712131510
122151a309996
13c4b0a04979
1464ca229466
15362e2ea7c6
hex1e8cc70642

131210872386 has 32 divisors (see below), whose sum is σ = 286331044608. Its totient is φ = 39753540240.

The previous prime is 131210872381. The next prime is 131210872393. The reversal of 131210872386 is 683278012131.

131210872386 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131210872381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182961 + ... + 543963.

It is an arithmetic number, because the mean of its divisors is an integer number (8947845144).

Almost surely, 2131210872386 is an apocalyptic number.

131210872386 is an abundant number, since it is smaller than the sum of its proper divisors (155120172222).

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

131210872386 is a wasteful number, since it uses less digits than its factorization.

131210872386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366526.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 131210872386 in words is "one hundred thirty-one billion, two hundred ten million, eight hundred seventy-two thousand, three hundred eighty-six".

Divisors: 1 2 3 6 11 22 33 66 5507 11014 16521 33042 60577 121154 181731 361003 363462 722006 1083009 2166018 3971033 7942066 11913099 23826198 1988043521 3976087042 5964130563 11928261126 21868478731 43736957462 65605436193 131210872386