Search a number
-
+
131660871830 = 25191634251239
BaseRepresentation
bin111101010011110011…
…0010111100010010110
3110120211200011021110022
41322213212113202112
54124120140344310
6140252325225142
712340451642165
oct1724746274226
9416750137408
10131660871830
1150923147784
1221624b621b2
13c553001327
14652dcc73dc
153658a88a55
hex1ea7997896

131660871830 has 32 divisors (see below), whose sum is σ = 250993209600. Its totient is φ = 49586440032.

The previous prime is 131660871787. The next prime is 131660871833. The reversal of 131660871830 is 38178066131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131660871833) 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, 2094650 + ... + 2156589.

It is an arithmetic number, because the mean of its divisors is an integer number (7843537800).

Almost surely, 2131660871830 is an apocalyptic number.

131660871830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131660871830 is a deficient number, since it is larger than the sum of its proper divisors (119332337770).

131660871830 is a wasteful number, since it uses less digits than its factorization.

131660871830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251428.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 131660871830 in words is "one hundred thirty-one billion, six hundred sixty million, eight hundred seventy-one thousand, eight hundred thirty".

Divisors: 1 2 5 10 19 38 95 163 190 326 815 1630 3097 6194 15485 30970 4251239 8502478 21256195 42512390 80773541 161547082 403867705 692951957 807735410 1385903914 3464759785 6929519570 13166087183 26332174366 65830435915 131660871830