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120331055 = 5132380489
BaseRepresentation
bin1110010110000…
…01101100101111
322101102110011202
413023001230233
5221301043210
615535040115
72660540255
oct713015457
9271373152
10120331055
1161a18559
123437003b
131bc11810
1411da45d5
15a86d9a5
hex72c1b2f

120331055 has 16 divisors (see below), whose sum is σ = 162267840. Its totient is φ = 84995328.

The previous prime is 120331039. The next prime is 120331091. The reversal of 120331055 is 550133021.

It is a cyclic number.

It is not a de Polignac number, because 120331055 - 24 = 120331039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38750 + ... + 41739.

It is an arithmetic number, because the mean of its divisors is an integer number (10141740).

Almost surely, 2120331055 is an apocalyptic number.

120331055 is a deficient number, since it is larger than the sum of its proper divisors (41936785).

120331055 is a wasteful number, since it uses less digits than its factorization.

120331055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80530.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 120331055 is about 10969.5512670300. The cubic root of 120331055 is about 493.6955827439.

Adding to 120331055 its reverse (550133021), we get a palindrome (670464076).

The spelling of 120331055 in words is "one hundred twenty million, three hundred thirty-one thousand, fifty-five".

Divisors: 1 5 13 23 65 115 299 1495 80489 402445 1046357 1851247 5231785 9256235 24066211 120331055