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120000003031 = 2910947837937
BaseRepresentation
bin110111111000010001…
…1101011101111010111
3102110202000011202122201
41233300203223233113
53431230000044111
6131043252305331
711445466124146
oct1576043535727
9373660152581
10120000003031
1146989967427
121b30b912247
13b4151b886c
145b4534775d
1531c4ea66c1
hex1bf08ebbd7

120000003031 has 16 divisors (see below), whose sum is σ = 125318793600. Its totient is φ = 114760654848.

The previous prime is 120000002971. The next prime is 120000003037. The reversal of 120000003031 is 130300000021.

It is a cyclic number.

It is not a de Polignac number, because 120000003031 - 221 = 119997905879 is a prime.

It is a super-2 number, since 2×1200000030312 (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 = 120000002999 and 120000003017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120000003037) 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, 15115095 + ... + 15123031.

It is an arithmetic number, because the mean of its divisors is an integer number (7832424600).

Almost surely, 2120000003031 is an apocalyptic number.

120000003031 is a deficient number, since it is larger than the sum of its proper divisors (5318790569).

120000003031 is a wasteful number, since it uses less digits than its factorization.

120000003031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12858.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 120000003031 its reverse (130300000021), we get a palindrome (250300003052).

The spelling of 120000003031 in words is "one hundred twenty billion, three thousand, thirty-one".

Divisors: 1 29 109 3161 4783 7937 138707 230173 521347 865133 15119063 25088857 37962671 1100917459 4137931139 120000003031