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231531533110196 = 22115262080297959
BaseRepresentation
bin110100101001001110100010…
…110010010000101110110100
31010100210012100122001220222022
4310221032202302100232310
5220321403034434011241
62140232041250252312
766524413141450334
oct6451164262205664
91110705318056868
10231531533110196
1167855a76476140
1221b74441b87098
139c264399c25c7
1441262865270c4
151bb79ee72654b
hexd293a2c90bb4

231531533110196 has 12 divisors (see below), whose sum is σ = 442014745028640. Its totient is φ = 105241605959160.

The previous prime is 231531533110081. The next prime is 231531533110247. The reversal of 231531533110196 is 691011335135132.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 5262080297959 = 231531533110196 / (2 + 3 + 1 + 5 + 3 + 1 + 5 + 3 + 3 + 1 + 1 + 0 + 1 + 9 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2631040148936 + ... + 2631040149023.

It is an arithmetic number, because the mean of its divisors is an integer number (36834562085720).

Almost surely, 2231531533110196 is an apocalyptic number.

It is an amenable number.

231531533110196 is a deficient number, since it is larger than the sum of its proper divisors (210483211918444).

231531533110196 is a wasteful number, since it uses less digits than its factorization.

231531533110196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5262080297974 (or 5262080297972 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 44.

The spelling of 231531533110196 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred thirty-three million, one hundred ten thousand, one hundred ninety-six".

Divisors: 1 2 4 11 22 44 5262080297959 10524160595918 21048321191836 57882883277549 115765766555098 231531533110196