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312444241 = 17132113913
BaseRepresentation
bin10010100111111…
…000010101010001
3210202220210220221
4102213320111101
51114441203431
651000433041
710512506104
oct2247702521
9722823827
10312444241
11150403a8a
1288778781
134c967065
142d6d273b
151c66b111
hex129f8551

312444241 has 8 divisors (see below), whose sum is σ = 331097544. Its totient is φ = 293821440.

The previous prime is 312444229. The next prime is 312444311. The reversal of 312444241 is 142444213.

It can be written as a sum of positive squares in 4 ways, for example, as 182142016 + 130302225 = 13496^2 + 11415^2 .

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 312444241 - 227 = 178226513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312444211) 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, 15501 + ... + 29413.

It is an arithmetic number, because the mean of its divisors is an integer number (41387193).

Almost surely, 2312444241 is an apocalyptic number.

It is an amenable number.

312444241 is a deficient number, since it is larger than the sum of its proper divisors (18653303).

312444241 is a wasteful number, since it uses less digits than its factorization.

312444241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15251.

The product of its digits is 3072, while the sum is 25.

The square root of 312444241 is about 17676.0923566268. The cubic root of 312444241 is about 678.5640408915.

Adding to 312444241 its reverse (142444213), we get a palindrome (454888454).

The spelling of 312444241 in words is "three hundred twelve million, four hundred forty-four thousand, two hundred forty-one".

Divisors: 1 17 1321 13913 22457 236521 18379073 312444241