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120310213 = 409294157
BaseRepresentation
bin1110010101111…
…00100111000101
322101101101120211
413022330213011
5221244411323
615534355421
72660422432
oct712744705
9271341524
10120310213
1161a03931
123435bb71
131bc0519a
1411d9ab89
15a86770d
hex72bc9c5

120310213 has 4 divisors (see below), whose sum is σ = 120604780. Its totient is φ = 120015648.

The previous prime is 120310193. The next prime is 120310219. The reversal of 120310213 is 312013021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312013021 = 1746717863.

It can be written as a sum of positive squares in 2 ways, for example, as 43256929 + 77053284 = 6577^2 + 8778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120310213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120310193 and 120310202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120310219) 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, 146670 + ... + 147487.

It is an arithmetic number, because the mean of its divisors is an integer number (30151195).

Almost surely, 2120310213 is an apocalyptic number.

It is an amenable number.

120310213 is a deficient number, since it is larger than the sum of its proper divisors (294567).

120310213 is an equidigital number, since it uses as much as digits as its factorization.

120310213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294566.

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

The square root of 120310213 is about 10968.6012326094. The cubic root of 120310213 is about 493.6670775021.

Adding to 120310213 its reverse (312013021), we get a palindrome (432323234).

The spelling of 120310213 in words is "one hundred twenty million, three hundred ten thousand, two hundred thirteen".

Divisors: 1 409 294157 120310213