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131164608408 = 23319973273629
BaseRepresentation
bin111101000101000000…
…1010001011110011000
3110112120002100111000120
41322022001101132120
54122111114432113
6140131200433240
712322244530101
oct1721201213630
9415502314016
10131164608408
1150699002719
1221506918820
13c4a4256c32
1464c40253a8
15362a20ca23
hex1e8a051798

131164608408 has 32 divisors (see below), whose sum is σ = 327929137200. Its totient is φ = 43719187328.

The previous prime is 131164608397. The next prime is 131164608409. The reversal of 131164608408 is 804806461131.

It is a self number, because there is not a number n which added to its sum of digits gives 131164608408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131164608409) 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, 342538 + ... + 616166.

Almost surely, 2131164608408 is an apocalyptic number.

It is an amenable number.

131164608408 is an abundant number, since it is smaller than the sum of its proper divisors (196764528792).

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

131164608408 is a wasteful number, since it uses less digits than its factorization.

131164608408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293611 (or 293607 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 131164608408 in words is "one hundred thirty-one billion, one hundred sixty-four million, six hundred eight thousand, four hundred eight".

Divisors: 1 2 3 4 6 8 12 24 19973 39946 59919 79892 119838 159784 239676 273629 479352 547258 820887 1094516 1641774 2189032 3283548 6567096 5465192017 10930384034 16395576051 21860768068 32791152102 43721536136 65582304204 131164608408