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120300031 = 1633672011
BaseRepresentation
bin1110010101110…
…10000111111111
322101100212121201
413022322013333
5221244100111
615534240331
72660350645
oct712720777
9271325551
10120300031
11619a7215
12343560a7
131bc00667
1411d97195
15a8646c1
hex72ba1ff

120300031 has 8 divisors (see below), whose sum is σ = 121428224. Its totient is φ = 119176920.

The previous prime is 120299999. The next prime is 120300127. The reversal of 120300031 is 130003021.

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

It is a cyclic number.

It is not a de Polignac number, because 120300031 - 25 = 120299999 is a prime.

It is a super-2 number, since 2×1203000312 = 28944194917201922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120299990 and 120300017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120300731) 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, 58816 + ... + 60826.

It is an arithmetic number, because the mean of its divisors is an integer number (15178528).

Almost surely, 2120300031 is an apocalyptic number.

120300031 is a deficient number, since it is larger than the sum of its proper divisors (1128193).

120300031 is a wasteful number, since it uses less digits than its factorization.

120300031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541.

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

The square root of 120300031 is about 10968.1370797415. The cubic root of 120300031 is about 493.6531505603.

Adding to 120300031 its reverse (130003021), we get a palindrome (250303052).

The spelling of 120300031 in words is "one hundred twenty million, three hundred thousand, thirty-one".

Divisors: 1 163 367 2011 59821 327793 738037 120300031