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31087678014 = 2341711288191
BaseRepresentation
bin11100111100111110…
…000101001000111110
32222020112221200010000
4130330332011020332
51002131421144024
622140444455130
72150244621531
oct347476051076
988215850100
1031087678014
1112203202688
12603724a4a6
132c15820363
14170ca9aa18
15c1e378cc9
hex73cf8523e

31087678014 has 40 divisors (see below), whose sum is σ = 73757046528. Its totient is φ = 9752996160.

The previous prime is 31087678007. The next prime is 31087678021. The reversal of 31087678014 is 41087678013.

It is an interprime number because it is at equal distance from previous prime (31087678007) and next prime (31087678021).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5641342 + ... + 5646849.

Almost surely, 231087678014 is an apocalyptic number.

31087678014 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31087678014 is an abundant number, since it is smaller than the sum of its proper divisors (42669368514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31087678014 is a wasteful number, since it uses less digits than its factorization.

31087678014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11288222 (or 11288213 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

Subtracting 31087678014 from its reverse (41087678013), we obtain a palindrome (9999999999).

The spelling of 31087678014 in words is "thirty-one billion, eighty-seven million, six hundred seventy-eight thousand, fourteen".

Divisors: 1 2 3 6 9 17 18 27 34 51 54 81 102 153 162 306 459 918 1377 2754 11288191 22576382 33864573 67729146 101593719 191899247 203187438 304781157 383798494 575697741 609562314 914343471 1151395482 1727093223 1828686942 3454186446 5181279669 10362559338 15543839007 31087678014