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131145214 = 2537915661
BaseRepresentation
bin1111101000100…
…01110111111110
3100010202212102011
413310101313332
5232033121324
621002521434
73151500364
oct764216776
9303685364
10131145214
1168034382
1237b0627a
1321229b25
14135bb634
15b7a7c94
hex7d11dfe

131145214 has 16 divisors (see below), whose sum is σ = 202979520. Its totient is φ = 63516960.

The previous prime is 131145199. The next prime is 131145233. The reversal of 131145214 is 412541131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544 + ... + 16204.

It is an arithmetic number, because the mean of its divisors is an integer number (12686220).

Almost surely, 2131145214 is an apocalyptic number.

131145214 is a deficient number, since it is larger than the sum of its proper divisors (71834306).

131145214 is a wasteful number, since it uses less digits than its factorization.

131145214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15795.

The product of its digits is 480, while the sum is 22.

The square root of 131145214 is about 11451.8650882727. The cubic root of 131145214 is about 508.0628990875.

Adding to 131145214 its reverse (412541131), we get a palindrome (543686345).

The spelling of 131145214 in words is "one hundred thirty-one million, one hundred forty-five thousand, two hundred fourteen".

Divisors: 1 2 53 79 106 158 4187 8374 15661 31322 830033 1237219 1660066 2474438 65572607 131145214