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120130312 = 2319790331
BaseRepresentation
bin1110010100100…
…00101100001000
322101001020210211
413022100230020
5221223132222
615530450504
72656043101
oct712205410
9271036724
10120130312
11618a0755
1234293a34
131bb71333
1411d513a8
15a82e277
hex7290b08

120130312 has 16 divisors (see below), whose sum is σ = 237099600. Its totient is φ = 56903760.

The previous prime is 120130303. The next prime is 120130319. The reversal of 120130312 is 213031021.

It is a super-2 number, since 2×1201303122 = 28862583722434688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120130292 and 120130301.

It is not an unprimeable number, because it can be changed into a prime (120130319) 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, 395014 + ... + 395317.

It is an arithmetic number, because the mean of its divisors is an integer number (14818725).

Almost surely, 2120130312 is an apocalyptic number.

It is an amenable number.

120130312 is a deficient number, since it is larger than the sum of its proper divisors (116969288).

120130312 is a wasteful number, since it uses less digits than its factorization.

120130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790356 (or 790352 counting only the distinct ones).

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

The square root of 120130312 is about 10960.3974380494. The cubic root of 120130312 is about 493.4208930698.

Adding to 120130312 its reverse (213031021), we get a palindrome (333161333).

It can be divided in two parts, 1201 and 30312, that added together give a palindrome (31513).

The spelling of 120130312 in words is "one hundred twenty million, one hundred thirty thousand, three hundred twelve".

Divisors: 1 2 4 8 19 38 76 152 790331 1580662 3161324 6322648 15016289 30032578 60065156 120130312