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164930031 = 3272616131
BaseRepresentation
bin10011101010010…
…10000111101111
3102111100022110200
421311022013233
5314210230111
624211004543
74041611400
oct1165120757
9374308420
10164930031
118510a412
1247299753
1328228746
1417c939a7
15e72d256
hex9d4a1ef

164930031 has 36 divisors (see below), whose sum is σ = 281716344. Its totient is φ = 92685600.

The previous prime is 164930009. The next prime is 164930099. The reversal of 164930031 is 130039461.

It is not a de Polignac number, because 164930031 - 26 = 164929967 is a prime.

It is a super-2 number, since 2×1649300312 = 54403830251321922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164929977 and 164930004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164931031) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23836 + ... + 29966.

It is an arithmetic number, because the mean of its divisors is an integer number (7825454).

Almost surely, 2164930031 is an apocalyptic number.

164930031 is a deficient number, since it is larger than the sum of its proper divisors (116786313).

164930031 is a wasteful number, since it uses less digits than its factorization.

164930031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6212 (or 6202 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 164930031 is about 12842.5087502404. The cubic root of 164930031 is about 548.4031157102.

Adding to 164930031 its reverse (130039461), we get a palindrome (294969492).

The spelling of 164930031 in words is "one hundred sixty-four million, nine hundred thirty thousand, thirty-one".

Divisors: 1 3 7 9 21 49 61 63 147 183 427 441 549 1281 2989 3843 6131 8967 18393 26901 42917 55179 128751 300419 373991 386253 901257 1121973 2617937 2703771 3365919 7853811 18325559 23561433 54976677 164930031