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231531532152110 = 25178417129769883
BaseRepresentation
bin110100101001001110100010…
…101110100110110100101110
31010100210012100120021020201122
4310221032202232212310232
5220321403034212331420
62140232041213540542
766524413130350151
oct6451164256466456
91110705316236648
10231531532152110
1167855a75981333
1221b744417a4752
139c264397484a8
144126286357c98
151bb79ee5d7725
hexd293a2ba6d2e

231531532152110 has 16 divisors (see below), whose sum is σ = 416759096943216. Its totient is φ = 92612093067648.

The previous prime is 231531532152017. The next prime is 231531532152127. The reversal of 231531532152110 is 11251235135132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63100772 + ... + 66669111.

It is an arithmetic number, because the mean of its divisors is an integer number (26047443558951).

Almost surely, 2231531532152110 is an apocalyptic number.

231531532152110 is a deficient number, since it is larger than the sum of its proper divisors (185227564791106).

231531532152110 is a wasteful number, since it uses less digits than its factorization.

231531532152110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129948307.

The product of its (nonzero) digits is 27000, while the sum is 35.

Adding to 231531532152110 its reverse (11251235135132), we get a palindrome (242782767287242).

The spelling of 231531532152110 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred thirty-two million, one hundred fifty-two thousand, one hundred ten".

Divisors: 1 2 5 10 178417 356834 892085 1784170 129769883 259539766 648849415 1297698830 23153153215211 46306306430422 115765766076055 231531532152110