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30000012103131 = 375944575432597
BaseRepresentation
bin1101101001000111011000…
…00100001000110111011011
310221012222021102110122212020
412310203230010020313123
512413010011044300011
6143445452034345523
76214300160305260
oct664435404106733
9127188242418766
1030000012103131
119616a2a808344
12344625342b2a3
131397cb1ab9175
1475a018c1b267
15370580dba006
hex1b48ec108ddb

30000012103131 has 32 divisors (see below), whose sum is σ = 46499562017280. Its totient is φ = 16848522852096.

The previous prime is 30000012103109. The next prime is 30000012103157. The reversal of 30000012103131 is 13130121000003.

It is not a de Polignac number, because 30000012103131 - 217 = 30000011972059 is a prime.

It is a super-2 number, since 2×300000121031312 (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30000012103131.

It is not an unprimeable number, because it can be changed into a prime (30000012103231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2805925 + ... + 8238521.

It is an arithmetic number, because the mean of its divisors is an integer number (1453111313040).

Almost surely, 230000012103131 is an apocalyptic number.

30000012103131 is a deficient number, since it is larger than the sum of its proper divisors (16499549914149).

30000012103131 is a wasteful number, since it uses less digits than its factorization.

30000012103131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5437123.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 30000012103131 its reverse (13130121000003), we get a palindrome (43130133103134).

The spelling of 30000012103131 in words is "thirty trillion, twelve million, one hundred three thousand, one hundred thirty-one".

Divisors: 1 3 7 21 59 177 413 1239 4457 13371 31199 93597 262963 788889 1840741 5432597 5522223 16297791 38028179 114084537 320523223 961569669 2243662561 6730987683 24213084829 72639254487 169491593803 508474781409 1428572004911 4285716014733 10000004034377 30000012103131