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531041693 = 71319130553
BaseRepresentation
bin11111101001110…
…000110110011101
31101000020201020212
4133221300312131
52041421313233
6124410022205
716105531340
oct3751606635
91330221225
10531041693
11252839536
12129a17965
1386033270
1450756457
153194aa48
hex1fa70d9d

531041693 has 16 divisors (see below), whose sum is σ = 657033216. Its totient is φ = 417951360.

The previous prime is 531041689. The next prime is 531041741. The reversal of 531041693 is 396140135.

It is a cyclic number.

It is not a de Polignac number, because 531041693 - 22 = 531041689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531041603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2105 + ... + 32657.

It is an arithmetic number, because the mean of its divisors is an integer number (41064576).

Almost surely, 2531041693 is an apocalyptic number.

It is an amenable number.

531041693 is a deficient number, since it is larger than the sum of its proper divisors (125991523).

531041693 is a wasteful number, since it uses less digits than its factorization.

531041693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30764.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 531041693 is about 23044.3418868928. The cubic root of 531041693 is about 809.7970801959.

The spelling of 531041693 in words is "five hundred thirty-one million, forty-one thousand, six hundred ninety-three".

Divisors: 1 7 13 91 191 1337 2483 17381 30553 213871 397189 2780323 5835623 40849361 75863099 531041693