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120256031 = 737464309
BaseRepresentation
bin1110010101011…
…11011000011111
322101021122021002
413022233120133
5221241143111
615533300515
72660105450
oct712573037
9271248232
10120256031
1161977155
123433473b
131bbb661c
1411d85127
15a85663b
hex72af61f

120256031 has 8 divisors (see below), whose sum is σ = 141150240. Its totient is φ = 100290528.

The previous prime is 120256027. The next prime is 120256043. The reversal of 120256031 is 130652021.

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 120256031 - 22 = 120256027 is a prime.

It is a super-3 number, since 3×1202560313 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 120255994 and 120256012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120256051) 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 7 ways as a sum of consecutive naturals, for example, 231896 + ... + 232413.

It is an arithmetic number, because the mean of its divisors is an integer number (17643780).

Almost surely, 2120256031 is an apocalyptic number.

120256031 is a deficient number, since it is larger than the sum of its proper divisors (20894209).

120256031 is an equidigital number, since it uses as much as digits as its factorization.

120256031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464353.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 120256031 is about 10966.1310862127. The cubic root of 120256031 is about 493.5929583140.

The spelling of 120256031 in words is "one hundred twenty million, two hundred fifty-six thousand, thirty-one".

Divisors: 1 7 37 259 464309 3250163 17179433 120256031