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31012301055 = 356745767523
BaseRepresentation
bin11100111000011110…
…100010100011111111
32222001022010010100210
4130320132202203333
51002003122113210
622125153123503
72145341131611
oct347036424377
988038103323
1031012301055
11121746a987a
126015b59593
132c0301b2c8
141702a78db1
15c17939e20
hex7387a28ff

31012301055 has 32 divisors (see below), whose sum is σ = 50471218944. Its totient is φ = 16257136896.

The previous prime is 31012300961. The next prime is 31012301081. The reversal of 31012301055 is 55010321013.

It is not a de Polignac number, because 31012301055 - 27 = 31012300927 is a prime.

It is a super-2 number, since 2×310123010552 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425524 + ... + 493046.

It is an arithmetic number, because the mean of its divisors is an integer number (1577225592).

Almost surely, 231012301055 is an apocalyptic number.

31012301055 is a deficient number, since it is larger than the sum of its proper divisors (19458917889).

31012301055 is a wasteful number, since it uses less digits than its factorization.

31012301055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68055.

The product of its (nonzero) digits is 450, while the sum is 21.

Adding to 31012301055 its reverse (55010321013), we get a palindrome (86022622068).

The spelling of 31012301055 in words is "thirty-one billion, twelve million, three hundred one thousand, fifty-five".

Divisors: 1 3 5 15 67 201 335 457 1005 1371 2285 6855 30619 67523 91857 153095 202569 337615 459285 1012845 4524041 13572123 22620205 30858011 67860615 92574033 154290055 462870165 2067486737 6202460211 10337433685 31012301055