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531030201 = 31375717987
BaseRepresentation
bin11111101001101…
…110000010111001
31101000020010111020
4133221232002321
52041420431301
6124405453053
716105453002
oct3751560271
91330203436
10531030201
11252830939
12129a11189
138602ac70
14507521a9
1531947436
hex1fa6e0b9

531030201 has 16 divisors (see below), whose sum is σ = 763554624. Its totient is φ = 326337984.

The previous prime is 531030169. The next prime is 531030211. The reversal of 531030201 is 102030135.

It is a happy number.

It is not a de Polignac number, because 531030201 - 25 = 531030169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531030211) 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 15 ways as a sum of consecutive naturals, for example, 20530 + ... + 38516.

It is an arithmetic number, because the mean of its divisors is an integer number (47722164).

Almost surely, 2531030201 is an apocalyptic number.

It is an amenable number.

531030201 is a deficient number, since it is larger than the sum of its proper divisors (232524423).

531030201 is a wasteful number, since it uses less digits than its factorization.

531030201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18760.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 531030201 is about 23044.0925401718. The cubic root of 531030201 is about 809.7912386865.

Adding to 531030201 its reverse (102030135), we get a palindrome (633060336).

It can be divided in two parts, 5310 and 30201, that added together give a triangular number (35511 = T266).

The spelling of 531030201 in words is "five hundred thirty-one million, thirty thousand, two hundred one".

Divisors: 1 3 13 39 757 2271 9841 17987 29523 53961 233831 701493 13616159 40848477 177010067 531030201