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120006031 = 294138139
BaseRepresentation
bin1110010011100…
…10010110001111
322100210221022211
413021302112033
5221210143111
615524051251
72655014545
oct711622617
9270727284
10120006031
1161816342
1234233b27
131bb298b2
1411d1bd95
15a807521
hex727258f

120006031 has 4 divisors (see below), whose sum is σ = 124144200. Its totient is φ = 115867864.

The previous prime is 120006013. The next prime is 120006041. The reversal of 120006031 is 130600021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120006031 - 29 = 120005519 is a prime.

It is a super-2 number, since 2×1200060312 = 28802894952745922, which 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 (120006001) 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, 2069041 + ... + 2069098.

It is an arithmetic number, because the mean of its divisors is an integer number (31036050).

Almost surely, 2120006031 is an apocalyptic number.

120006031 is a deficient number, since it is larger than the sum of its proper divisors (4138169).

120006031 is an equidigital number, since it uses as much as digits as its factorization.

120006031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4138168.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 120006031 is about 10954.7264228734. The cubic root of 120006031 is about 493.2506779082.

Adding to 120006031 its reverse (130600021), we get a palindrome (250606052).

The spelling of 120006031 in words is "one hundred twenty million, six thousand, thirty-one".

Divisors: 1 29 4138139 120006031