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531297093 = 31311351901
BaseRepresentation
bin11111101010101…
…111001101000101
31101000201200121010
4133222233031011
52042003001333
6124415312433
716110644055
oct3752571505
91330650533
10531297093
112529a3408
12129b1b719
13860c25a2
14507c1565
153199b563
hex1faaf345

531297093 has 8 divisors (see below), whose sum is σ = 713804256. Its totient is φ = 351494000.

The previous prime is 531297077. The next prime is 531297101. The reversal of 531297093 is 390792135.

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 531297093 - 24 = 531297077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531287093) 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, 675558 + ... + 676343.

It is an arithmetic number, because the mean of its divisors is an integer number (89225532).

Almost surely, 2531297093 is an apocalyptic number.

It is an amenable number.

531297093 is a deficient number, since it is larger than the sum of its proper divisors (182507163).

531297093 is a wasteful number, since it uses less digits than its factorization.

531297093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352035.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 531297093 is about 23049.8827111983. The cubic root of 531297093 is about 809.9268810693.

The spelling of 531297093 in words is "five hundred thirty-one million, two hundred ninety-seven thousand, ninety-three".

Divisors: 1 3 131 393 1351901 4055703 177099031 531297093