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31078368607 = 1113297494181
BaseRepresentation
bin11100111100011010…
…100100010101011111
32222012220102201000011
4130330122210111133
51002122030243412
622135513144051
72150102526436
oct347432442537
988186381004
1031078368607
11121a8a24360
1260340bb027
132c13910c30
14170b75611d
15c1d63a7a7
hex73c6a455f

31078368607 has 16 divisors (see below), whose sum is σ = 37770677280. Its totient is φ = 25180444800.

The previous prime is 31078368599. The next prime is 31078368619. The reversal of 31078368607 is 70686387013.

It is not a de Polignac number, because 31078368607 - 23 = 31078368599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31078368677) 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, 3742944 + ... + 3751237.

It is an arithmetic number, because the mean of its divisors is an integer number (2360667330).

Almost surely, 231078368607 is an apocalyptic number.

31078368607 is a deficient number, since it is larger than the sum of its proper divisors (6692308673).

31078368607 is a wasteful number, since it uses less digits than its factorization.

31078368607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7494234.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 31078368607 in words is "thirty-one billion, seventy-eight million, three hundred sixty-eight thousand, six hundred seven".

Divisors: 1 11 13 29 143 319 377 4147 7494181 82435991 97424353 217331249 1071667883 2390643739 2825306237 31078368607