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31153040642105 = 512772431677333
BaseRepresentation
bin1110001010101011000011…
…11010111101000000111001
311002022012102222002022122222
413011111201322331000321
513040402411401021410
6150131302001453425
76363506250213254
oct705254172750071
9132265388068588
1031153040642105
119a20a26314558
1235b1802341275
13144c946bcb645
14799b5ad2a09b
15390567040955
hex1c5561ebd039

31153040642105 has 16 divisors (see below), whose sum is σ = 37678584029184. Its totient is φ = 24725815007040.

The previous prime is 31153040642099. The next prime is 31153040642107. The reversal of 31153040642105 is 50124604035113.

It is not a de Polignac number, because 31153040642105 - 210 = 31153040641081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31153040642107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45655019 + ... + 46332351.

It is an arithmetic number, because the mean of its divisors is an integer number (2354911501824).

Almost surely, 231153040642105 is an apocalyptic number.

It is an amenable number.

31153040642105 is a deficient number, since it is larger than the sum of its proper divisors (6525543387079).

31153040642105 is a wasteful number, since it uses less digits than its factorization.

31153040642105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749896.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 31153040642105 its reverse (50124604035113), we get a palindrome (81277644677218).

The spelling of 31153040642105 in words is "thirty-one trillion, one hundred fifty-three billion, forty million, six hundred forty-two thousand, one hundred five".

Divisors: 1 5 127 635 72431 362155 677333 3386665 9198737 45993685 86021291 430106455 49059906523 245299532615 6230608128421 31153040642105