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312011 = 729253
BaseRepresentation
bin1001100001011001011
3120211222222
41030023023
534441021
610404255
72436440
oct1141313
9524888
10312011
111a3467
1213068b
13ac02b
14819c7
15626ab
hex4c2cb

312011 has 12 divisors (see below), whose sum is σ = 376272. Its totient is φ = 253344.

The previous prime is 312007. The next prime is 312023. The reversal of 312011 is 110213.

It is not a de Polignac number, because 312011 - 22 = 312007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312011.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312011.

It is not an unprimeable number, because it can be changed into a prime (312031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5861 + ... + 5913.

It is an arithmetic number, because the mean of its divisors is an integer number (31356).

2312011 is an apocalyptic number.

312011 is a deficient number, since it is larger than the sum of its proper divisors (64261).

312011 is an equidigital number, since it uses as much as digits as its factorization.

312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 312011 is about 558.5794482435. The cubic root of 312011 is about 67.8250259305.

Adding to 312011 its reverse (110213), we get a palindrome (422224).

The spelling of 312011 in words is "three hundred twelve thousand, eleven", and thus it is an iban number.

Divisors: 1 7 29 53 203 371 841 1537 5887 10759 44573 312011