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230131203012 = 223241982118583
BaseRepresentation
bin1101011001010011100…
…0110111101111000100
3211000000020110101120100
43112110320313233010
512232302041444022
6253415410204100
722424602643634
oct3262470675704
9730006411510
10230131203012
1189664078a77
1238726583630
1318916931499
14b1d1b206c4
155ebd8681ac
hex3594e37bc4

230131203012 has 72 divisors (see below), whose sum is σ = 583850554560. Its totient is φ = 76429995840.

The previous prime is 230131203007. The next prime is 230131203019. The reversal of 230131203012 is 210302131032.

230131203012 is a `hidden beast` number, since 230 + 13 + 120 + 301 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (230131203019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12374673 + ... + 12393255.

It is an arithmetic number, because the mean of its divisors is an integer number (8109035480).

Almost surely, 2230131203012 is an apocalyptic number.

It is an amenable number.

230131203012 is an abundant number, since it is smaller than the sum of its proper divisors (353719351548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230131203012 is a wasteful number, since it uses less digits than its factorization.

230131203012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19833 (or 19828 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 230131203012 its reverse (210302131032), we get a palindrome (440433334044).

The spelling of 230131203012 in words is "two hundred thirty billion, one hundred thirty-one million, two hundred three thousand, twelve".

Divisors: 1 2 3 4 6 9 12 18 36 419 821 838 1257 1642 1676 2463 2514 3284 3771 4926 5028 7389 7542 9852 14778 15084 18583 29556 37166 55749 74332 111498 167247 222996 334494 343999 668988 687998 1031997 1375996 2063994 3095991 4127988 6191982 7786277 12383964 15256643 15572554 23358831 30513286 31145108 45769929 46717662 61026572 70076493 91539858 93435324 137309787 140152986 183079716 274619574 280305972 549239148 6392533417 12785066834 19177600251 25570133668 38355200502 57532800753 76710401004 115065601506 230131203012