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315030204431 = 479116575321
BaseRepresentation
bin1001001010110010100…
…00110111000000001111
31010010010222220112010022
410211121100313000033
520130140213020211
6400420050332355
731521512361335
oct4453120670017
91103128815108
10315030204431
11111670379358
125107ab8a0bb
13239269c19b7
1411367389b55
1582dbe8cbdb
hex495943700f

315030204431 has 4 divisors (see below), whose sum is σ = 315036827664. Its totient is φ = 315023581200.

The previous prime is 315030204371. The next prime is 315030204481. The reversal of 315030204431 is 134402030513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-315030204431 is a prime.

It is a super-2 number, since 2×3150302044312 (a number of 24 digits) contains 22 as substring.

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 315030204431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315030204481) 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, 3239750 + ... + 3335571.

It is an arithmetic number, because the mean of its divisors is an integer number (78759206916).

Almost surely, 2315030204431 is an apocalyptic number.

315030204431 is a deficient number, since it is larger than the sum of its proper divisors (6623233).

315030204431 is an equidigital number, since it uses as much as digits as its factorization.

315030204431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6623232.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 315030204431 its reverse (134402030513), we get a palindrome (449432234944).

The spelling of 315030204431 in words is "three hundred fifteen billion, thirty million, two hundred four thousand, four hundred thirty-one".

Divisors: 1 47911 6575321 315030204431