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131719740 = 223517296173
BaseRepresentation
bin1111101100111…
…10001000111100
3100011212001111220
413312132020330
5232210012430
621023113340
73156412365
oct766361074
9304761456
10131719740
1168396a99
1238142850
132139b499
14136cab6c
15b86d110
hex7d9e23c

131719740 has 192 divisors, whose sum is σ = 416223360. Its totient is φ = 30965760.

The previous prime is 131719727. The next prime is 131719817. The reversal of 131719740 is 47917131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1804344 + ... + 1804416.

It is an arithmetic number, because the mean of its divisors is an integer number (2167830).

Almost surely, 2131719740 is an apocalyptic number.

131719740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131719740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208111680).

131719740 is an abundant number, since it is smaller than the sum of its proper divisors (284503620).

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

131719740 is a wasteful number, since it uses less digits than its factorization.

131719740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 131719740 is about 11476.9220612497. The cubic root of 131719740 is about 508.8037321480.

The spelling of 131719740 in words is "one hundred thirty-one million, seven hundred nineteen thousand, seven hundred forty".