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531931027 = 4328514339
BaseRepresentation
bin11111101101001…
…001111110010011
31101001220220012011
4133231021332103
52042133243102
6124441043351
716116224215
oct3755117623
91331826164
10531931027
11253296721
1212a186557
1386284cb4
14509085b5
1531a742d7
hex1fb49f93

531931027 has 8 divisors (see below), whose sum is σ = 544617920. Its totient is φ = 519258600.

The previous prime is 531931019. The next prime is 531931039. The reversal of 531931027 is 720139135.

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 531931027 - 23 = 531931019 is a prime.

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 531931027.

It is not an unprimeable number, because it can be changed into a prime (531931627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120424 + ... + 124762.

It is an arithmetic number, because the mean of its divisors is an integer number (68077240).

Almost surely, 2531931027 is an apocalyptic number.

531931027 is a deficient number, since it is larger than the sum of its proper divisors (12686893).

531931027 is a wasteful number, since it uses less digits than its factorization.

531931027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 531931027 is about 23063.6299614783. The cubic root of 531931027 is about 810.2488830278.

The spelling of 531931027 in words is "five hundred thirty-one million, nine hundred thirty-one thousand, twenty-seven".

Divisors: 1 43 2851 4339 122593 186577 12370489 531931027