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120313212 = 22310026101
BaseRepresentation
bin1110010101111…
…01010101111100
322101101112200220
413022331111330
5221300010322
615534421340
72660434245
oct712752574
9271345626
10120313212
1161a06108
1234361850
131bc06666
1411d9bccc
15a86855c
hex72bd57c

120313212 has 12 divisors (see below), whose sum is σ = 280730856. Its totient is φ = 40104400.

The previous prime is 120313181. The next prime is 120313217. The reversal of 120313212 is 212313021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 120313191 and 120313200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120313217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5013039 + ... + 5013062.

It is an arithmetic number, because the mean of its divisors is an integer number (23394238).

Almost surely, 2120313212 is an apocalyptic number.

120313212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120313212 is an abundant number, since it is smaller than the sum of its proper divisors (160417644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120313212 is a wasteful number, since it uses less digits than its factorization.

120313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10026108 (or 10026106 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 120313212 is about 10968.7379401643. The cubic root of 120313212 is about 493.6711793851.

Adding to 120313212 its reverse (212313021), we get a palindrome (332626233).

The spelling of 120313212 in words is "one hundred twenty million, three hundred thirteen thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 10026101 20052202 30078303 40104404 60156606 120313212