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131974227 = 32711375147
BaseRepresentation
bin1111101110111…
…00010001010011
3100012022222121100
413313130101103
5232241133402
621032355443
73161522340
oct767342123
9305288540
10131974227
1168550210
1238245b83
132145a278
14137557c7
15b8bd71c
hex7ddc453

131974227 has 48 divisors (see below), whose sum is σ = 244138752. Its totient is φ = 66692160.

The previous prime is 131974201. The next prime is 131974231. The reversal of 131974227 is 722479131.

It is not a de Polignac number, because 131974227 - 28 = 131973971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131974191 and 131974200.

It is not an unprimeable number, because it can be changed into a prime (131974237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23068 + ... + 28214.

It is an arithmetic number, because the mean of its divisors is an integer number (5086224).

Almost surely, 2131974227 is an apocalyptic number.

131974227 is a deficient number, since it is larger than the sum of its proper divisors (112164525).

131974227 is a wasteful number, since it uses less digits than its factorization.

131974227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208 (or 5205 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 131974227 is about 11488.0036124646. The cubic root of 131974227 is about 509.1311966967.

It can be divided in two parts, 13197 and 4227, that added together give a square (17424 = 1322).

The spelling of 131974227 in words is "one hundred thirty-one million, nine hundred seventy-four thousand, two hundred twenty-seven".

Divisors: 1 3 7 9 11 21 33 37 63 77 99 111 231 259 333 407 693 777 1221 2331 2849 3663 5147 8547 15441 25641 36029 46323 56617 108087 169851 190439 324261 396319 509553 571317 1188957 1333073 1713951 2094829 3566871 3999219 6284487 11997657 14663803 18853461 43991409 131974227