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131025212 = 2260154503
BaseRepresentation
bin1111100111101…
…00100100111100
3100010112202210122
413303310210330
5232020301322
621000154112
73150460463
oct763644474
9303482718
10131025212
1167a621aa
1237a68938
13211b7316
14135899da
15b782442
hex7cf493c

131025212 has 12 divisors (see below), whose sum is σ = 229679856. Its totient is φ = 65402400.

The previous prime is 131025203. The next prime is 131025221. The reversal of 131025212 is 212520131.

It is a happy number.

131025212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (131025203) and next prime (131025221).

It is a congruent number.

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, 24848 + ... + 29655.

It is an arithmetic number, because the mean of its divisors is an integer number (19139988).

Almost surely, 2131025212 is an apocalyptic number.

It is an amenable number.

131025212 is a deficient number, since it is larger than the sum of its proper divisors (98654644).

131025212 is a wasteful number, since it uses less digits than its factorization.

131025212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55108 (or 55106 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 131025212 is about 11446.6244806056. The cubic root of 131025212 is about 507.9078872812.

Adding to 131025212 its reverse (212520131), we get a palindrome (343545343).

The spelling of 131025212 in words is "one hundred thirty-one million, twenty-five thousand, two hundred twelve".

Divisors: 1 2 4 601 1202 2404 54503 109006 218012 32756303 65512606 131025212