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120012203231 = 1917321364669
BaseRepresentation
bin110111111000101001…
…0001110010011011111
3102110202212010121011222
41233301102032103133
53431241111000411
6131044410003555
711446004616224
oct1576122162337
9373685117158
10120012203231
114699583a638
121b313a165bb
13b41789aa0b
145b46c0194b
1531c60b64db
hex1bf148e4df

120012203231 has 8 divisors (see below), whose sum is σ = 126336274800. Its totient is φ = 113688895680.

The previous prime is 120012203189. The next prime is 120012203237. The reversal of 120012203231 is 132302210021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120012203231 is a prime.

It is a super-2 number, since 2×1200122032312 (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 (120012203237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146765 + ... + 511433.

It is an arithmetic number, because the mean of its divisors is an integer number (15792034350).

Almost surely, 2120012203231 is an apocalyptic number.

120012203231 is a deficient number, since it is larger than the sum of its proper divisors (6324071569).

120012203231 is a wasteful number, since it uses less digits than its factorization.

120012203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382009.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 120012203231 its reverse (132302210021), we get a palindrome (252314413252).

The spelling of 120012203231 in words is "one hundred twenty billion, twelve million, two hundred three thousand, two hundred thirty-one".

Divisors: 1 19 17321 329099 364669 6928711 6316431749 120012203231