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312680893 = 767666697
BaseRepresentation
bin10010101000110…
…010000110111101
3210210100211112211
4102220302012331
51120021242033
651005500421
710514513050
oct2250620675
9723324484
10312680893
11150555868
1288871711
134ca1a9a5
142d754a97
151c6b62cd
hex12a321bd

312680893 has 8 divisors (see below), whose sum is σ = 362683712. Its totient is φ = 264011616.

The previous prime is 312680873. The next prime is 312680897. The reversal of 312680893 is 398086213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312680893 - 217 = 312549821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312680897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332880 + ... + 333817.

It is an arithmetic number, because the mean of its divisors is an integer number (45335464).

Almost surely, 2312680893 is an apocalyptic number.

It is an amenable number.

312680893 is a deficient number, since it is larger than the sum of its proper divisors (50002819).

312680893 is an equidigital number, since it uses as much as digits as its factorization.

312680893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666771.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 312680893 is about 17682.7852161361. The cubic root of 312680893 is about 678.7353173309.

The spelling of 312680893 in words is "three hundred twelve million, six hundred eighty thousand, eight hundred ninety-three".

Divisors: 1 7 67 469 666697 4666879 44668699 312680893