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120110231231 = 613195938387
BaseRepresentation
bin110111111011100100…
…0001010111010111111
3102111000200120221022122
41233313020022322333
53431441204344411
6131102231033155
711451305056154
oct1576710127277
9374020527278
10120110231231
1146a36104511
121b34080b7bb
13b431ca0a53
145b55c3c22b
1531ce9cb9db
hex1bf720aebf

120110231231 has 4 divisors (see below), whose sum is σ = 120306170232. Its totient is φ = 119914292232.

The previous prime is 120110231203. The next prime is 120110231233. The reversal of 120110231231 is 132132011021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132132011021 = 373571135433.

It is a cyclic number.

It is not a de Polignac number, because 120110231231 - 234 = 102930362047 is a prime.

It is a super-2 number, since 2×1201102312312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120110231233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97968581 + ... + 97969806.

It is an arithmetic number, because the mean of its divisors is an integer number (30076542558).

Almost surely, 2120110231231 is an apocalyptic number.

120110231231 is a deficient number, since it is larger than the sum of its proper divisors (195939001).

120110231231 is an equidigital number, since it uses as much as digits as its factorization.

120110231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195939000.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 120110231231 its reverse (132132011021), we get a palindrome (252242242252).

The spelling of 120110231231 in words is "one hundred twenty billion, one hundred ten million, two hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 613 195938387 120110231231