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120213223 = 139247171
BaseRepresentation
bin1110010101001…
…00111011100111
322101012110112121
413022210323213
5221233310343
615532330411
72656536604
oct712447347
9271173477
10120213223
1161947a79
1234313a07
131bb9ccb0
1411d736ab
15a848aed
hex72a4ee7

120213223 has 4 divisors (see below), whose sum is σ = 129460408. Its totient is φ = 110966040.

The previous prime is 120213221. The next prime is 120213229. The reversal of 120213223 is 322312021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120213223 - 21 = 120213221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120213197 and 120213206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120213221) 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, 4623573 + ... + 4623598.

It is an arithmetic number, because the mean of its divisors is an integer number (32365102).

Almost surely, 2120213223 is an apocalyptic number.

120213223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

120213223 is a deficient number, since it is larger than the sum of its proper divisors (9247185).

120213223 is an equidigital number, since it uses as much as digits as its factorization.

120213223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9247184.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 120213223 is about 10964.1790846374. The cubic root of 120213223 is about 493.5343826376.

Adding to 120213223 its reverse (322312021), we get a palindrome (442525244).

The spelling of 120213223 in words is "one hundred twenty million, two hundred thirteen thousand, two hundred twenty-three".

Divisors: 1 13 9247171 120213223