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131123060 = 22553123701
BaseRepresentation
bin1111101000011…
…00011101110100
3100010201202000122
413310030131310
5232031414220
621002231112
73151345655
oct764143564
9303652018
10131123060
1168019772
1237ab5498
132121ca13
14135b352c
15b7a1425
hex7d0c774

131123060 has 24 divisors (see below), whose sum is σ = 280556136. Its totient is φ = 51459200.

The previous prime is 131123059. The next prime is 131123063. The reversal of 131123060 is 60321131.

It can be written as a sum of positive squares in 4 ways, for example, as 6666724 + 124456336 = 2582^2 + 11156^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60791 + ... + 62910.

It is an arithmetic number, because the mean of its divisors is an integer number (11689839).

Almost surely, 2131123060 is an apocalyptic number.

131123060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131123060 is an abundant number, since it is smaller than the sum of its proper divisors (149433076).

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

131123060 is a wasteful number, since it uses less digits than its factorization.

131123060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123763 (or 123761 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 131123060 is about 11450.8977813969. The cubic root of 131123060 is about 508.0342889208.

Adding to 131123060 its reverse (60321131), we get a palindrome (191444191).

The spelling of 131123060 in words is "one hundred thirty-one million, one hundred twenty-three thousand, sixty".

Divisors: 1 2 4 5 10 20 53 106 212 265 530 1060 123701 247402 494804 618505 1237010 2474020 6556153 13112306 26224612 32780765 65561530 131123060