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120220650031 = 17103528113001
BaseRepresentation
bin110111111110110110…
…1011000101000101111
3102111022101100210102211
41233331231120220233
53432202441300111
6131121213431251
711454115443646
oct1577555305057
9374271323384
10120220650031
1146a92471819
121b37179b527
13b44bb21911
145b6678235d
1531d953d521
hex1bfdb58a2f

120220650031 has 16 divisors (see below), whose sum is σ = 128562527808. Its totient is φ = 112020480000.

The previous prime is 120220649993. The next prime is 120220650071. The reversal of 120220650031 is 130056022021.

It is not a de Polignac number, because 120220650031 - 225 = 120187095599 is a prime.

It is a super-2 number, since 2×1202206500312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120220649984 and 120220650011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120220650071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9240531 + ... + 9253531.

It is an arithmetic number, because the mean of its divisors is an integer number (8035157988).

Almost surely, 2120220650031 is an apocalyptic number.

120220650031 is a deficient number, since it is larger than the sum of its proper divisors (8341877777).

120220650031 is a wasteful number, since it uses less digits than its factorization.

120220650031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18402.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 120220650031 its reverse (130056022021), we get a palindrome (250276672052).

The spelling of 120220650031 in words is "one hundred twenty billion, two hundred twenty million, six hundred fifty thousand, thirty-one".

Divisors: 1 17 103 1751 5281 13001 89777 221017 543943 1339103 9247031 22764751 68658281 1167190777 7071802943 120220650031