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318085741 = 2237142193
BaseRepresentation
bin10010111101011…
…001101001101101
3211011112102121101
4102331121221231
51122412220431
651321403101
710611453451
oct2275315155
9734472541
10318085741
11153607586
128a639491
1350b90b1c
1430360661
151cdd2961
hex12f59a6d

318085741 has 4 divisors (see below), whose sum is σ = 318230172. Its totient is φ = 317941312.

The previous prime is 318085723. The next prime is 318085769. The reversal of 318085741 is 147580813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 147580813 = 712078603.

It can be written as a sum of positive squares in 2 ways, for example, as 297700516 + 20385225 = 17254^2 + 4515^2 .

It is a cyclic number.

It is not a de Polignac number, because 318085741 - 25 = 318085709 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 318085741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318085711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68860 + ... + 73333.

It is an arithmetic number, because the mean of its divisors is an integer number (79557543).

Almost surely, 2318085741 is an apocalyptic number.

It is an amenable number.

318085741 is a deficient number, since it is larger than the sum of its proper divisors (144431).

318085741 is a wasteful number, since it uses less digits than its factorization.

318085741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144430.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 318085741 is about 17834.9583963630. The cubic root of 318085741 is about 682.6237596194.

The spelling of 318085741 in words is "three hundred eighteen million, eighty-five thousand, seven hundred forty-one".

Divisors: 1 2237 142193 318085741