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164706031 = 7731572053
BaseRepresentation
bin10011101000100…
…11011011101111
3102110220221012101
421310103123233
5314131043111
624202115531
74036656340
oct1164233357
9373827171
10164706031
1184a77096
12471abba7
132817a7b9
1417c360c7
15e6d6bc1
hex9d136ef

164706031 has 16 divisors (see below), whose sum is σ = 192122944. Its totient is φ = 138288384.

The previous prime is 164706029. The next prime is 164706043. The reversal of 164706031 is 130607461.

It is a cyclic number.

It is not a de Polignac number, because 164706031 - 21 = 164706029 is a prime.

It is a super-2 number, since 2×1647060312 = 54256153295545922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164706331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79201 + ... + 81253.

It is an arithmetic number, because the mean of its divisors is an integer number (12007684).

Almost surely, 2164706031 is an apocalyptic number.

164706031 is a deficient number, since it is larger than the sum of its proper divisors (27416913).

164706031 is a wasteful number, since it uses less digits than its factorization.

164706031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 164706031 is about 12833.7847496364. The cubic root of 164706031 is about 548.1547316895.

The spelling of 164706031 in words is "one hundred sixty-four million, seven hundred six thousand, thirty-one".

Divisors: 1 7 73 157 511 1099 2053 11461 14371 80227 149869 322321 1049083 2256247 23529433 164706031