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131468658100 = 225213322131397
BaseRepresentation
bin111101001110000100…
…1001000010110110100
3110120100021110210210021
41322130021020112310
54123221434024400
6140221301334524
712332626104253
oct1723411102664
9416307423707
10131468658100
11508346a275a
1221590707444
13c5222420b0
14651257079a
153646c6b71a
hex1e9c2485b4

131468658100 has 72 divisors (see below), whose sum is σ = 307337313528. Its totient is φ = 48525657600.

The previous prime is 131468658089. The next prime is 131468658103. The reversal of 131468658100 is 1856864131.

It can be written as a sum of positive squares in 12 ways, for example, as 44955024676 + 86513633424 = 212026^2 + 294132^2 .

It is a super-2 number, since 2×1314686581002 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131468658103) 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, 4171602 + ... + 4202998.

It is an arithmetic number, because the mean of its divisors is an integer number (4268573799).

Almost surely, 2131468658100 is an apocalyptic number.

131468658100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131468658100 is an abundant number, since it is smaller than the sum of its proper divisors (175868655428).

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

131468658100 is a wasteful number, since it uses less digits than its factorization.

131468658100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34645 (or 34638 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 131468658100 in words is "one hundred thirty-one billion, four hundred sixty-eight million, six hundred fifty-eight thousand, one hundred".

Divisors: 1 2 4 5 10 13 20 25 26 50 52 65 100 130 260 325 650 1300 3221 6442 12884 16105 31397 32210 41873 62794 64420 80525 83746 125588 156985 161050 167492 209365 313970 322100 408161 418730 627940 784925 816322 837460 1046825 1569850 1632644 2040805 2093650 3139700 4081610 4187300 8163220 10204025 20408050 40816100 101129737 202259474 404518948 505648685 1011297370 1314686581 2022594740 2528243425 2629373162 5056486850 5258746324 6573432905 10112973700 13146865810 26293731620 32867164525 65734329050 131468658100