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31301114515 = 5111261345121
BaseRepresentation
bin11101001001101100…
…010001101010010011
32222210102120100221121
4131021230101222103
51003101041131030
622213551303111
72155446040426
oct351154215223
988712510847
1031301114515
1112302732690
12609681aa97
132c4ab00448
14172d1799bd
15c32e8947a
hex749b11a93

31301114515 has 16 divisors (see below), whose sum is σ = 40980161376. Its totient is φ = 22762137600.

The previous prime is 31301114513. The next prime is 31301114519. The reversal of 31301114515 is 51541110313.

It is not a de Polignac number, because 31301114515 - 21 = 31301114513 is a prime.

It is a super-2 number, since 2×313011145152 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31301114515.

It is not an unprimeable number, because it can be changed into a prime (31301114513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671155 + ... + 716275.

It is an arithmetic number, because the mean of its divisors is an integer number (2561260086).

Almost surely, 231301114515 is an apocalyptic number.

31301114515 is a deficient number, since it is larger than the sum of its proper divisors (9679046861).

31301114515 is a wasteful number, since it uses less digits than its factorization.

31301114515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57750.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 31301114515 its reverse (51541110313), we get a palindrome (82842224828).

The spelling of 31301114515 in words is "thirty-one billion, three hundred one million, one hundred fourteen thousand, five hundred fifteen".

Divisors: 1 5 11 55 12613 45121 63065 138743 225605 496331 693715 2481655 569111173 2845555865 6260222903 31301114515