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15313140205 = 511911305621
BaseRepresentation
bin11100100001011101…
…11111100111101101
31110112012101010021221
432100232333213231
5222330130441310
611011301423341
71051321354426
oct162056774755
943465333257
1015313140205
116548960980
122b7440ab51
1315a0697b0c
14a53a5864d
155e956bada
hex390bbf9ed

15313140205 has 16 divisors (see below), whose sum is σ = 20068363008. Its totient is φ = 11124568000.

The previous prime is 15313140179. The next prime is 15313140217. The reversal of 15313140205 is 50204131351.

It is a happy number.

It is not a de Polignac number, because 15313140205 - 25 = 15313140173 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 15313140205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102706 + ... + 202915.

It is an arithmetic number, because the mean of its divisors is an integer number (1254272688).

Almost surely, 215313140205 is an apocalyptic number.

It is an amenable number.

15313140205 is a deficient number, since it is larger than the sum of its proper divisors (4755222803).

15313140205 is a wasteful number, since it uses less digits than its factorization.

15313140205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306548.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 15313140205 its reverse (50204131351), we get a palindrome (65517271556).

The spelling of 15313140205 in words is "fifteen billion, three hundred thirteen million, one hundred forty thousand, two hundred five".

Divisors: 1 5 11 55 911 4555 10021 50105 305621 1528105 3361831 16809155 278420731 1392103655 3062628041 15313140205