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131204324 = 22139235979
BaseRepresentation
bin1111101001000…
…00010011100100
3100010212212111102
413310200103210
5232042014244
621004055232
73152134616
oct764402344
9303785442
10131204324
1168074829
1237b34518
132124a9c4
14135d4db6
15b7ba54e
hex7d204e4

131204324 has 12 divisors (see below), whose sum is σ = 231260400. Its totient is φ = 65129928.

The previous prime is 131204303. The next prime is 131204357. The reversal of 131204324 is 423402131.

It is a junction number, because it is equal to n+sod(n) for n = 131204296 and 131204305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117434 + ... + 118545.

It is an arithmetic number, because the mean of its divisors is an integer number (19271700).

Almost surely, 2131204324 is an apocalyptic number.

It is an amenable number.

131204324 is a deficient number, since it is larger than the sum of its proper divisors (100056076).

131204324 is a wasteful number, since it uses less digits than its factorization.

131204324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236122 (or 236120 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 131204324 is about 11454.4455998534. The cubic root of 131204324 is about 508.1392192881.

Adding to 131204324 its reverse (423402131), we get a palindrome (554606455).

The spelling of 131204324 in words is "one hundred thirty-one million, two hundred four thousand, three hundred twenty-four".

Divisors: 1 2 4 139 278 556 235979 471958 943916 32801081 65602162 131204324