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31064351445 = 3351132036339
BaseRepresentation
bin11100111011100101…
…000110001011010101
32222011221001120002000
4130323211012023111
51002104433221240
622134252505513
72146542426201
oct347345061325
988157046060
1031064351445
11121a1020026
12602b47b299
132c10a43a5a
141709947b01
15c1c2bc430
hex73b9462d5

31064351445 has 32 divisors (see below), whose sum is σ = 55714262400. Its totient is φ = 16421029632.

The previous prime is 31064351441. The next prime is 31064351543. The reversal of 31064351445 is 54415346013.

31064351445 is a `hidden beast` number, since 3 + 1 + 0 + 643 + 5 + 1 + 4 + 4 + 5 = 666.

It is not a de Polignac number, because 31064351445 - 22 = 31064351441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31064351441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1002915 + ... + 1033424.

It is an arithmetic number, because the mean of its divisors is an integer number (1741070700).

Almost surely, 231064351445 is an apocalyptic number.

It is an amenable number.

31064351445 is a deficient number, since it is larger than the sum of its proper divisors (24649910955).

31064351445 is a wasteful number, since it uses less digits than its factorization.

31064351445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036466 (or 2036460 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 31064351445 its reverse (54415346013), we get a palindrome (85479697458).

The spelling of 31064351445 in words is "thirty-one billion, sixty-four million, three hundred fifty-one thousand, four hundred forty-five".

Divisors: 1 3 5 9 15 27 45 113 135 339 565 1017 1695 3051 5085 15255 2036339 6109017 10181695 18327051 30545085 54981153 91635255 230106307 274905765 690318921 1150531535 2070956763 3451594605 6212870289 10354783815 31064351445