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14121931 = 2343109131
BaseRepresentation
bin110101110111…
…101111001011
3222120110122111
4311313233023
512103400211
61222403151
7231014545
oct65675713
928513574
1014121931
117a7601a
1248904b7
132c05a95
141c38695
15138e421
hexd77bcb

14121931 has 16 divisors (see below), whose sum is σ = 15333120. Its totient is φ = 12972960.

The previous prime is 14121929. The next prime is 14121941. The reversal of 14121931 is 13912141.

14121931 = 892 + 902 + ... + 3502.

It is a cyclic number.

It is not a de Polignac number, because 14121931 - 21 = 14121929 is a prime.

It is a super-2 number, since 2×141219312 = 398857870337522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14121911) 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, 107736 + ... + 107866.

It is an arithmetic number, because the mean of its divisors is an integer number (958320).

Almost surely, 214121931 is an apocalyptic number.

14121931 is a deficient number, since it is larger than the sum of its proper divisors (1211189).

14121931 is a wasteful number, since it uses less digits than its factorization.

14121931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306.

The product of its digits is 216, while the sum is 22.

The square root of 14121931 is about 3757.9157787263. The cubic root of 14121931 is about 241.7118978887.

The spelling of 14121931 in words is "fourteen million, one hundred twenty-one thousand, nine hundred thirty-one".

Divisors: 1 23 43 109 131 989 2507 3013 4687 5633 14279 107801 129559 328417 613997 14121931