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312155241445 = 51131181467813
BaseRepresentation
bin1001000101011011110…
…01101111101111100101
31002211201122011021022201
410202231321233233211
520103243220211240
6355222510054501
731360332526135
oct4425571575745
91084648137281
10312155241445
11110425550093
12505b81aa431
13235891a8c78
1411173610ac5
1581be896d9a
hex48ade6fbe5

312155241445 has 16 divisors (see below), whose sum is σ = 378222005232. Its totient is φ = 247304135680.

The previous prime is 312155241443. The next prime is 312155241451. The reversal of 312155241445 is 544142551213.

It can be written as a sum of positive squares in 8 ways, for example, as 1236366244 + 310918875201 = 35162^2 + 557601^2 .

It is not a de Polignac number, because 312155241445 - 21 = 312155241443 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 (312155241443) 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, 433359 + ... + 901171.

It is an arithmetic number, because the mean of its divisors is an integer number (23638875327).

Almost surely, 2312155241445 is an apocalyptic number.

It is an amenable number.

312155241445 is a deficient number, since it is larger than the sum of its proper divisors (66066763787).

312155241445 is a wasteful number, since it uses less digits than its factorization.

312155241445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469112.

The product of its digits is 96000, while the sum is 37.

Adding to 312155241445 its reverse (544142551213), we get a palindrome (856297792658).

The spelling of 312155241445 in words is "three hundred twelve billion, one hundred fifty-five million, two hundred forty-one thousand, four hundred forty-five".

Divisors: 1 5 113 565 1181 5905 133453 467813 667265 2339065 52862869 264314345 552487153 2762435765 62431048289 312155241445