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931748103442 = 213109328774913
BaseRepresentation
bin11011000111100001000…
…00111100010100010010
310022002000010102211201101
431203300200330110102
5110231210003302232
61552012243255014
7124213405126612
oct15436040742422
93262003384641
10931748103442
1132a174571912
121306b467a46a
1369b2c070830
143314da78a42
151938485c1e7
hexd8f083c512

931748103442 has 16 divisors (see below), whose sum is σ = 1518940102680. Its totient is φ = 426092285952.

The previous prime is 931748103427. The next prime is 931748103449. The reversal of 931748103442 is 244301847139.

It is a Cunningham number, because it is equal to 9652712+1.

It can be written as a sum of positive squares in 4 ways, for example, as 899160994081 + 32587109361 = 948241^2 + 180519^2 .

It is a junction number, because it is equal to n+sod(n) for n = 931748103392 and 931748103401.

It is not an unprimeable number, because it can be changed into a prime (931748103449) 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 7 ways as a sum of consecutive naturals, for example, 164384623 + ... + 164390290.

Almost surely, 2931748103442 is an apocalyptic number.

931748103442 is a deficient number, since it is larger than the sum of its proper divisors (587191999238).

931748103442 is a wasteful number, since it uses less digits than its factorization.

931748103442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328775037.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 931748103442 in words is "nine hundred thirty-one billion, seven hundred forty-eight million, one hundred three thousand, four hundred forty-two".

Divisors: 1 2 13 26 109 218 1417 2834 328774913 657549826 4274073869 8548147738 35836465517 71672931034 465874051721 931748103442