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3120313 = 71929809
BaseRepresentation
bin1011111001110010111001
312212112021011
423321302321
51244322223
6150513521
735344060
oct13716271
95775234
103120313
111841379
1210658a1
13853351
145b31d7
1541980d
hex2f9cb9

3120313 has 16 divisors (see below), whose sum is σ = 3888000. Its totient is φ = 2443392.

The previous prime is 3120311. The next prime is 3120317. The reversal of 3120313 is 3130213.

It is not a de Polignac number, because 3120313 - 21 = 3120311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3120293 and 3120302.

It is not an unprimeable number, because it can be changed into a prime (3120311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3453 + ... + 4261.

It is an arithmetic number, because the mean of its divisors is an integer number (243000).

Almost surely, 23120313 is an apocalyptic number.

It is an amenable number.

3120313 is a deficient number, since it is larger than the sum of its proper divisors (767687).

3120313 is a wasteful number, since it uses less digits than its factorization.

3120313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 3120313 is about 1766.4407717215. The cubic root of 3120313 is about 146.1277576917.

Adding to 3120313 its reverse (3130213), we get a palindrome (6250526).

The spelling of 3120313 in words is "three million, one hundred twenty thousand, three hundred thirteen".

Divisors: 1 7 19 29 133 203 551 809 3857 5663 15371 23461 107597 164227 445759 3120313