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530118431 = 3643145517
BaseRepresentation
bin11111100110001…
…111011100011111
31100221111210202222
4133212033130133
52041202242211
6124334135555
716064634533
oct3746173437
91327453688
10530118431
11252268907
121296515bb
1385a9bc5b
1450595bc3
15318171db
hex1f98f71f

530118431 has 4 divisors (see below), whose sum is σ = 530267592. Its totient is φ = 529969272.

The previous prime is 530118419. The next prime is 530118451. The reversal of 530118431 is 134811035.

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

It is a cyclic number.

It is not a de Polignac number, because 530118431 - 26 = 530118367 is a prime.

It is a super-2 number, since 2×5301184312 = 562051101771803522, which 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 530118431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530118451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69116 + ... + 76401.

It is an arithmetic number, because the mean of its divisors is an integer number (132566898).

Almost surely, 2530118431 is an apocalyptic number.

530118431 is a deficient number, since it is larger than the sum of its proper divisors (149161).

530118431 is a wasteful number, since it uses less digits than its factorization.

530118431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149160.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 530118431 is about 23024.3008797227. The cubic root of 530118431 is about 809.3275071609.

Adding to 530118431 its reverse (134811035), we get a palindrome (664929466).

It can be divided in two parts, 5301 and 18431, that added together give a palindrome (23732).

The spelling of 530118431 in words is "five hundred thirty million, one hundred eighteen thousand, four hundred thirty-one".

Divisors: 1 3643 145517 530118431